IN THE

TENTH COURT OF APPEALS

No. 10-10-00420-CR

THO TIEU,

Appellant

v.

THE STATE OF TEXAS,

Appellee

From the 19th District Court

McLennan County, Texas

Trial Court No. 2010-535-C1

MEMORANDUM OPINION

In two issues, appellant Tho Tieu argues that the trial court erred in denying her

motion to suppress because the scope of the stop exceeded the limits of police power 

and because she did not voluntarily consent to police searching the contents of a box in 

her car. We will affirm.

On April 17, 2010, at around 1:30 a.m., McLennan County Sheriffs’ Deputy Brent 

Ewing observed Tieu’s car “weaving” through traffic. Deputy Ewing explained that he 

saw Tieu “actually cross the center line and cross the shoulder several times ... .” 
Tieu v. State Page 2

Deputy Ewing began following Tieu and saw her speed up to seventy miles per hour in 

a sixty-five-mile-per-hour zone and then immediately slow down to forty miles per 

hour. Based on these observations and the time of night, Deputy Ewing suspected that 

Tieu was driving while intoxicated. But before Deputy Ewing initiated a stop or 

activated the overhead lights on his patrol car, Tieu pulled over to the side of the road. 

Concerned for her welfare, Deputy Ewing stopped his patrol car and approached Tieu’s 

stopped car. Before he walked over to Tieu’s car, Deputy Ewing activated the overhead 

lights on his patrol car so that oncoming traffic could see both vehicles parked on the 

side of the road. Deputy Ewing asked Tieu if she had been drinking, to which she 

responded, “No.” Tieu apologized for failing to drive in a single lane and explained 

that she was sleepy. Deputy Ewing testified that Tieu did not exhibit any of the classic 

signs of driving while intoxicated—slurred speech, the smell of alcohol on her breath, or 

red and glassy eyes. While speaking with Tieu, Deputy Ewing noticed a box in the 

backseat. The box appeared to be opened slightly and had a “Southern Comfort” label. 

Deputy Ewing explained that Southern Comfort is an alcoholic-beverage company and 

that the box resembled those used to package and distribute multiple bottles of alcohol. 

He also explained that he was concerned that Tieu had open alcoholic containers in the 

car, which would be a violation of the law.

Deputy Ewing asked Tieu if he could look in the box to determine its contents. 

Tieu consented to the search, got out of her car, walked around to the passenger side, 

and opened the top flap of the box so that Deputy Ewing could see its contents. When 

he peered inside the box, Deputy Ewing saw multiple packages that had been vacuum-
Tieu v. State Page 3

sealed and contained a brown and green leafy substance. Based on his twelve years’ 

experience in law enforcement, Deputy Ewing believed that the packages contained 

marihuana. Deputy Ewing testified that he had prior experience with marihuana that 

was packaged in the same manner as that stored in the box in Tieu’s car. After 

observing the contents of the box, Deputy Ewing instructed Tieu to take the box out of 

the car for further inspection. Deputy Ewing noted that, at this point, Tieu was not free 

to leave. He then opened one of the packages so that he could smell and perform a field 

test on the substance. Based on his investigation, Deputy Ewing determined that the 

substance was marihuana and subsequently arrested Tieu.

We review a trial court’s ruling on a motion to suppress evidence under a 

bifurcated standard of review. Amador v. State, 221 S.W.3d 666, 673 (Tex. Crim. App. 

2007). We afford almost total deference to a trial court’s determination of the historical 

facts that the record supports, especially when the implicit fact-finding is based on an 

evaluation of credibility and demeanor. Id. When application-of-the-law-to-fact 

questions do not turn on the credibility and demeanor of the witnesses, we review the 

trial court’s ruling on those questions de novo. Id. We also review the trial court’s 

application of the law de novo. Ross v. State, 32 S.W.3d 853, 856 (Tex. Crim. App. 2000).

The trial judge is the sole trier of fact and judge of the credibility of the witnesses 

and the weight to be given their testimony. Wiede v. State, 214 S.W.3d 17, 24-25 (Tex. 

Crim. App. 2007). When reviewing a trial court’s ruling on a motion to suppress, we 

view all of the evidence in the light most favorable to the ruling. Garcia-Cantu v. State, 

253 S.W.3d 236, 241 (Tex. Crim. App. 2008). When, as here, the trial court does not enter 
Tieu v. State Page 4

findings of fact, we infer the necessary factual findings that support the trial court’s 

ruling if the evidence, viewed in the light most favorable to the ruling, supports the 

implied fact findings. Id.

In a suppression hearing alleging a Fourth Amendment violation, the initial 

burden of producing evidence that rebuts the presumption of proper police conduct is 

on the defendant. Ford v. State, 158 S.W.3d 488, 492 (Tex. Crim. App. 2005). This 

burden may be met by establishing that a search or seizure occurred without a warrant. 

Id. After this showing is made, the burden of proof shifts to the State, at which time the 

State is required to establish that the search or seizure was conducted with a warrant or 

was reasonable. Id. Here, the State stipulated that the box was searched without a 

warrant. Thus, the State bore the burden of proving that the warrantless search of the 

box was reasonable.

In her first issue, Tieu asserts that the trial court erred in denying her motion to 

suppress because Deputy Ewing did not have probable cause to search the car or the 

box because she was sober and cooperative. In her second issue, Tieu contends that she 

did not voluntarily consent to the search of the box. The State counters that: (1) the 

encounter between Tieu and Deputy Ewing was consensual and did not implicate the 

Fourth Amendment, or alternatively, Deputy Ewing had a reasonable suspicion that 

Tieu was engaged in criminal activity; and (2) Tieu voluntarily consented to the 

warrantless search of the box.

Law enforcement officers may stop and question a citizen, and such consensual 

encounters require no objective justification. Woodard v. State, 341 S.W.3d 404, 411 (Tex. 
Tieu v. State Page 5

Crim. App. 2011) (citing Florida v. Bostick, 501 U.S. 429, 434, 111 S.Ct. 2383, 2386, 115 

L.Ed.2d 589 (1991) (“Our cases make it clear that a seizure does not occur simply 

because a police officer approaches an individual and asks a few questions.”));

Castleberry v. State, 332 S.W.3d 460, 466 (Tex. Crim. App. 2011). Citizens may terminate 

consensual encounters. Woodard, 341 S.W.3d at 411. Even when the officer does not 

communicate to the citizen that the request for information may be ignored, the 

citizen’s acquiescence to the officer’s request does not cause the encounter to lose its 

consensual nature. Id. If it was an option to ignore the request or terminate the 

interaction, then a Fourth Amendment seizure has not occurred. Id. Moreover, an 

officer’s asking questions and requesting consent to search do not, standing alone, 

render an encounter a detention. Hunter v. State, 955 S.W.2d 102, 106 (Tex. Crim. App. 

1997). Only if the officer conveyed a message that compliance was required has a 

consensual encounter become a detention. Id.

“Courts consider the totality of the circumstances surrounding the interaction to 

determine whether a reasonable person in the defendant’s shoes would have felt free to 

ignore the request or terminate the interaction.” Woodard, 341 S.W.3d at 411. We 

consider the time, place, and surrounding circumstances, but the officer’s conduct is the 

most important factor when deciding whether an interaction was consensual. Id. When 

deciding whether a consensual encounter has become a detention, we consider several 

factors, including: 

(1) whether the officer was in uniform; (2) whether the officer exhibited a 

weapon; (3) the number of officers present; (4) whether the officer 

suggested that he would get a warrant if the defendant did not comply; (5) 
Tieu v. State Page 6

whether the officer told the defendant he believed the defendant was 

carrying drugs; and (6) whether the officer told the defendant that 

compliance was or was not required.

Melugin v. State, 989 S.W.2d 470, 472 (Tex. App.—Houston [1st Dist.] 1999, pet. ref’d) 

(citing Hunter, 955 S.W.2d at 104). Moreover, we view the totality of the circumstances 

of the encounter in the light most favorable to the trial court’s implicit or explicit factual 

findings; a piecemeal or “divide and conquer” approach is prohibited. Garcia-Cantu, 

253 S.W.3d at 244.

In this case, Deputy Ewing approached Tieu’s car only after she voluntarily 

pulled off to the side of the road. Initially, Deputy Ewing was the only law enforcement 

officer at the scene of the incident, and the record does not indicate that he exhibited a 

weapon. See Melugin, 989 S.W.2d at 472; see also Hunter, 955 S.W.2d at 104. Deputy 

Ewing did activate the overhead lights on his patrol car, but only after Tieu had already 

pulled over. Deputy Ewing said he activated his overhead lights so that oncoming 

traffic could see both vehicles parked on the side of the road. See Martin v. State, 104 

S.W.3d 298, 301 (Tex. App.—El Paso 2003, no pet.) (“[D]epending on the facts, the 

officers may well activate their emergency lights for reasons of highway safety or so as 

not to unduly alarm the stopped motorists.”); cf. Hudson v. State, 247 S.W.3d 780, 785 

(Tex. App.—Amarillo 2008, no pet.) (“Activation of overhead lights on a police vehicle 

does not necessarily make an encounter non-consensual[,]” but “when a person stops in 

response to a patrol car’s emergency lights rather than of his own accord, an 

investigatory detention has occurred and reasonable suspicion is required.”). 

Furthermore, Deputy Ewing noted that he positioned his patrol car behind Tieu’s car. 
Tieu v. State Page 7

Though she was prevented from driving in reverse because of the positioning of 

Deputy Ewing’s patrol car, she was not impeded from driving forward. See GarciaCantu, 253 S.W.3d at 246 n.44 (stating that when officer partially blocks parked car or 

makes it somewhat inconvenient for citizen to depart voluntarily, such action is not 

alone sufficient to be a detention). In addition, the record does not suggest that Deputy 

Ewing conveyed a message to Tieu that she must comply with his requests, including 

when he asked to look inside the box. See Hunter, 955 S.W.2d at 104, 106. Under the

totality of the circumstances, we conclude that the initial interaction between Deputy 

Ewing and Tieu was a consensual encounter. See Woodard, 341 S.W.3d at 411 (stating 

that “[g]enerally, however, when an officer through force or a showing of authority 

restrains a citizen’s liberty, the encounter is no longer consensual”); see also Castleberry, 

332 S.W.3d at 468; Hunter, 955 S.W.2d at 106.

Tieu’s chief complaint is that once Deputy Ewing determined that she was not 

driving while intoxicated, Deputy Ewing should not have requested permission to 

search the box and she should have been released. But Tieu’s complaint about the 

scope of the encounter is premised on an assumption that the encounter between her 

and Deputy Ewing was a detention and not consensual—an assumption we have 

rejected. See Kothe v. State, 152 S.W.3d 54, 63 (Tex. Crim. App. 2004) (holding that once 

original purpose for stop is concluded, detention must end and may not be 

unreasonably prolonged solely in hopes of finding evidence of some other crime); see 

also Davis v. State, 947 S.W.2d 240, 243 (Tex. Crim. App. 1997) (“[O]nce the reason for the 

stop has been satisfied, the stop may not be used as a ‘fishing expedition for unrelated 
Tieu v. State Page 8

criminal activity.’”) (quoting Ohio v. Robinette, 519 U.S. 33, 41, 117 S.Ct. 417, 422, 136 

L.Ed.2d 347 (1996)). 

In any event, while speaking with Tieu during the consensual encounter, Deputy 

Ewing noticed the partially opened Southern Comfort box on the back seat of Tieu’s car

in plain view. Deputy Ewing testified that, based on his observation of the box, he 

believed that Tieu may have had open alcoholic containers in her car. At this time, 

Deputy Ewing asked Tieu if he could look inside the box. Nothing in the record 

indicates that Deputy Ewing ordered Tieu to allow him the opportunity to look inside 

the box. Tieu granted Deputy Ewing permission to search the box. In fact, she got out 

of her car, opened the passenger-side door, and opened the box so that Deputy Ewing 

could see inside. 

As a general rule, searches conducted without a warrant are deemed 

unreasonable unless the situation presents an exception to the warrant requirement. 

Hubert v. State, 312 S.W.3d 554, 560 (Tex. Crim. App. 2010). One such exception arises 

when a person voluntarily consents to a search. Maxwell v. State, 73 S.W.3d 278, 281 

(Tex. Crim. App. 2002). The validity of consent to search is a question of fact to be 

determined from all the circumstances. Carmouche v. State, 10 S.W.3d 323, 331 (Tex. 

Crim. App. 2000); see also Schneckloth v. Bustamonte, 412 U.S. 218, 248-49, 93 S.Ct. 2041, 

2059, 36 L.Ed.2d 854 (1973) (holding that test for valid consent to search requires 

consent to be voluntary, and voluntariness is question of fact to be determined from all 

the circumstances). To be valid, consent to search must be positive and unequivocal 

and must not be the product of duress or coercion, either express or implied. 
Tieu v. State Page 9

Carmouche, 10 S.W.3d at 331. The U.S. Constitution requires the State to prove the 

validity of the consent by a preponderance of the evidence, but the Texas Constitution 

requires the State to make the same showing by clear and convincing evidence. Guevara 

v. State, 97 S.W.3d 579, 582 (Tex. Crim. App. 2003). Accordingly, we review the 

evidence under the more protective Texas standard. See Ibarra v. State, 953 S.W.2d 242, 

244-45 (Tex. Crim. App. 1997).

Voluntariness of consent is determined by looking at the totality of all the 

surrounding circumstances—both the characteristics of the accused and the details of 

the interrogation. Reasor v. State, 12 S.W.3d 813, 818 (Tex. Crim. App. 2000) (citing 

Schneckloth, 412 U.S. at 226, 93 S.Ct. at 2041). By looking at the circumstances leading up 

to the search, the reaction of the accused to pressure, and any other factor deemed 

relevant, a trial court determines whether the statement of consent was given 

voluntarily. Id. In determining voluntariness, the factors considered include: (1) 

whether the consenting person was in custody; (2) whether the person was arrested at 

gunpoint; (3) whether the person had the option of refusing consent; (4) the 

constitutional advice given to the person; (5) the length of the detention; (6) the 

repetitiveness of the questioning; and (7) the use of physical punishment. Id. Courts 

may also consider the consenting person’s age, education, and intelligence. Id. 

Here, there is no evidence, other than Tieu’s apparent sleepiness, to indicate that 

she did not voluntarily consent to the search. Tieu not only agreed to allow Deputy 

Ewing to look inside the box, she got out of her car, opened the passenger-side door, 

and positioned the box so that Deputy Ewing could peer inside. The consensual 
Tieu v. State Page 10

encounter was brief, and there is no indication that Tieu did not have the option to deny 

Deputy Ewing permission to search the box. Based on the totality of the circumstances, 

we cannot say that Tieu consented to the search of the box as a result of duress or 

coercion, either express or implied.1 See Carmouche, 10 S.W.3d at 331. Accordingly, we 

believe that the State proved by clear and convincing evidence that Tieu voluntarily 

consented to the search of the box. 

In sum, viewing the evidence in the light most favorable to the trial court’s 

ruling, we conclude that: (1) the initial encounter between Deputy Ewing and Tieu was 

consensual and did not amount to a detention; and (2) Tieu voluntarily consented to the 

search of the box. Accordingly, we overrule both of Tieu’s issues and affirm the 

judgment of the trial court.

REX D. DAVIS

Justice

Before Chief Justice Gray,

Justice Davis, and

Justice Scoggins

Affirmed

Opinion delivered and filed June 27, 2012

Do not publish

[CR25]

 

1 Tieu also appears to complain that Deputy Ewing did not obtain her consent to search the 

vacuum-sealed bags that were inside the box. But once he recognized that the bags contained a brown 

and green leafy substance that, based on his twelve years of law-enforcement experience, resembled 

marihuana, Deputy Ewing had probable cause to perform a search of the bags to determine whether they 

contained marihuana. See McNairy v. State, 835 S.W.2d 101, 106 (Tex. Crim. App. 1991) (stating that 

probable cause to search exists where “reasonably trustworthy facts and circumstances within the 

knowledge of the officer on the scene would lead a man of reasonable prudence to believe that the 

instrumentality of a crime or evidence of a crime will be found”); see also Hughes v. State, 24 S.W.3d 833, 

838 (Tex. Crim. App. 2000) (same). Thus, at this point, Deputy Ewing did not need consent from Tieu to 

search the bags. See Hughes, 24 S.W.3d at 838; see also McNairy, 835 S.W.2d at 106.