At a press conference held Wednesday, Audrain County Sheriff Matt Oller asked for the public's help in the investigation of the death of Antonio D. Jefferson, 19, of Mexico who was found lying in the roadway next to a passenger car that had crashed into a tree in the 13000 Block of Audrain Road 913 in rural Mexico. Jefferson's injuries were not consistent with a car crash.

"We encourage anyone with information to come forth," Oller said. "We're asking for anybody in the public that might have any information about Mr. Jefferson's whereabouts between 11:30 yesterday (Tuesday) morning and noon," Oller said. "So, we're working with about a 30 minute window." 

Oller said things were unclear as to what happened at this time, but did say Jefferson's death is being treated as a homicide. "An autopsy was performed today and it was determined Mr. Jefferson expired from blood loss from injuries sustained from whatever the incident was," Oller stated.

The sheriff did say a weapon was found, but he would not say what kind of weapon or if it was related to the incident. "We aren't releasing that at this time," he said.

Oller said there is a 30-minute window from the time Jefferson was seen at Walmart and from the time the 911 call came in.

The sheriff said at this point they are exploring every possibility as far as what happened. "The scene and evidence along with the injuries make it unclear of what happened."

The sheriff said there is a lot of speculation but they are going with evidence. "We are going where the evidence leads us," he added.

The Major Case Squad has been called in to help with the investigation because there are so many leads to follow up on and the Major Case Squad can do a lot of work in a short amount of time.

If anyone has any information regarding this investigation, they are asked to contact the Mid-Missouri Major Case Squad at (573) 473-5801 extension 1504, Audrain County Sheriff's Office or the Missouri Highway Patrol.