A 16-year-old in Robertson County, Tenn. has died, possibly as a result of drinking racing fuel, according to news reports.

Logan Stephenson and another teen were found unresponsive, according to WKRN TV. Stephenson died Thursday.

Authorities said "both boys were among a select group of teenagers in Greenbrier who may have ingested a racing fuel-based liquid substance last Wednesday, one day prior to Logan being found dead," the report stated.

"Neither his death nor the friend's sickness has been connected to drinking the racing fuel at this time."

However, Greenbrier Police Chief KD Smith told WZTV he believes Logan and his friend started drinking racing fuel mixed with Mountain Dew Wednesday.

"They noticed the color of his skin had changed and he started having a seizure. His hands started drawing up," Smith said.

The family has started a GoFundMe account for a memorial in Stephenson's honor.