GREENBRIER, Tenn. (WKRN) – Two teenagers have died after the Robertson County Sheriff’s Office say they became ill from an incident last week involving teenagers ingesting a substance determined to be racing fuel. 
 
 A second teenager, Logan’s best friend, was taken to Vanderbilt University Medical Center for what police say is an “undisclosed ailment.” 
 
 Both boys, Logan Stephenson and J.D. Byram, were reportedly among a select group of teenagers in Greenbrier last Wednesday when the incident happened. 
 
 Stephenson, a 16-year-old student at Greenbrier High School, was found unresponsive inside his home the next morning and pronounced dead at the scene. He is survived by his parents, grandparents, and six brothers and sisters. 
 
 Byram was transported to Vanderbilt University Medical Center in critical condition where he died Monday night. 
 
 “Our hearts are heavy today as we have learned that a second young man has died from the incident last week,” said Sheriff Bill Holt. “We ask that everyone continue to pray for both of these families as they go through this tragic time.” 
 
 The Greenbrier police chief told News 2 Tuesday that investigators received information from friends of the teens that several had been drinking Mountain Dew mixed with racing fuel, which can be bought at some gas stations and is used for any car associated with racing, including drag racing. 
 
 Two other Greenbrier High School students were taken to the emergency after they reportedly told investigators they drank racing fuel. They were released and deemed OK. 
 
 The police chief also told News 2 Stephenson and Byram possibly drank the same mixture and it may have caused their deaths, but the connection won’t be confirmed until autopsy results are completed. 
 
 Authorities are also still awaiting toxicology results. The investigation continues into both boys’ deaths. 
 
 The sheriff’s office is also asking people to refrain from posting or spreading rumors regarding the circumstances as they are “deeply disturbing and harmful to the families that are already going through a tragic time of loss.” 
 
 Police say if you know someone who may have consumed a similar mixture to seek medical attention at once. 
 
 Authorities are also asking anyone with information about the incident to come forward and call the Greenbrier Police Department at 615-643-4467. 
 
 “You will not be in trouble with law enforcement if you were present at this gathering,” police said. “Our goal is to ensure the safety of our citizens and get medical help for those who may need it.” ||||| UPDATE (1-26) - Vanderbilt University Medical Center has now confirmed the second teen who is believed to have ingested a mixture of racing fuel and Mountain Dew has died. 
 
 Officials say the boy passed Monday afternoon just after 3 p.m., but could not confirm until Tuesday morning. 
 
 FOX 17 will continue to update you here. 
 
 GREENBRIER, Tenn. (WZTV) - Greenbrier Police believe a teen who died last Thursday may have been drinking racing fuel and Mountain Dew. 
 
 Greenbrier Police are waiting for a report from the medical examiner to determine the exact cause of death. 
 
 Just old enough to drive, 16-year-old Logan Stephenson parked in spot 148 at Greenbrier High School. Since his sudden death, friends and family have placed candles and roses in his parking spot. 
 
 Greenbrier Police Chief KD Smith believes Logan and his friend started drinking racing fuel, a type of gasoline, mixed with Mountain Dew Wednesday. 
 
 Thursday morning, Logan was unresponsive. 
 
 "They noticed the color of his skin had changed and he started having a seizure. His hands started drawing up," Smith said. 
 
 His friend, whose name has not been released, had to be rushed to Vanderbilt University Medical Center. As of Monday night, his condition has not been confirmed. Police tell FOX 17 the last time they checked, he was in a coma. 
 
 Since the incident, Smith said two other teenage boys have admitted to drinking the same dangerous mixture. 
 
 "Ask your children," Smith said. "Get them to be open and honest with you. Nobody is going to be in any trouble." 
 
 Logan's family chose not to speak to media Monday night. A family friend confirms a GoFundMe account has been started for Logan that will raise money for education and awareness about consuming toxic substances. If you'd like to donate, visit the Logan Stephenson Memorial. ||||| on behalf of Wayne Stephenson GREENBRIER, TN Wendell White 
 
 Logan Shane Stephenson, age 16 of Greenbrier, TN passed away Thursday, January 21, 2016 at his home. Austin & Bell Funeral Home Greenbrier is in charge of arrangements. 
 
 Visitation will be 3:00 p.m. to 8:00 p.m. on Monday, January 25, 2016 at Austin & Bell Funeral Home Greenbrier and 10:00 a.m. until the hour of service on Tuesday, January 26, 2016 at Our Lady of Lourdes Catholic Church. 
 
 
 
 
 
 The family would like donations to be sent to this gofundme or Greenbrier High School in Memory of Logan Shane Stephenson. The family will be meeting with the school to discuss how to disburse these funds. Their desire is that it will be used to educate children of the many dangers which they face which parents are not aware of and therefore not able to warn them.
– Two teen boys in rural Tennessee are dead after apparently drinking a blend of racing fuel and Mountain Dew last week—something others have since admitted to drinking as well. Logan Stephenson, 16, was pronounced dead at his home in Greenbrier on Thursday morning, and the police chief tells WZTV that others told him "the color of his skin had changed and he started having a seizure. His hands started drawing up." Logan's best friend, JD Byram, was rushed to a nearby medical center in a coma, and died Monday afternoon. "Our hearts are heavy today as we have learned that a second young man has died from the incident last week," says the Robertson County sheriff, per WATE. "We ask that everyone continue to pray for both of these families as they go through this tragic time." A friend of the family has set up a GoFundMe page with a $10,000 target, to be donated to Greenbrier High School for an alcohol and drug abuse program. The police chief says two other boys have now come forward admitting to having consumed the same toxic blend; they were treated at the emergency room and released. "Ask your children," he says in a plea for more information. "Get them to be open and honest with you. Nobody is going to be in any trouble." Candles and roses now fill the parking space where Logan, who'd recently gotten his license, parked at school. (This teen died on his first day at work.)