Opinion ID: 2632308
Heading Depth: 3
Heading Rank: 3

Heading: Capacity to waive Miranda rights

Text: Describing himself as a habitual user of methamphetamine, defendant argues that his responses during the interrogation suggest he was under the influence of that substance. Defendant, however, specifically denied being under the influence of alcohol or narcotics at the time of the interview. Contrary to counsel's suggestion, we cannot determine from defendant's conversational pattern in a written transcript whether he was under the influence of methamphetamine, and if so, to such an extent that he was not competent to waive his rights. Moreover, defendant's failure to raise this issue in the trial court bars him from asserting it on appeal. (See People v. Kipp (2001) 26 Cal.4th 1100, 1130, 113 Cal.Rptr.2d 27, 33 P.3d 450; People v. Ray (1996) 13 Cal.4th 313, 339, 52 Cal.Rptr.2d 296, 914 P.2d 846.)