WILLOUGHBY HILLS -- A 19-year-old was found frozen in a pickup truck in his Erich Drive driveway in Willoughby Hills Thursday.

According to the Willoughby Hills Police Department, Andrew Norris was discovered by his stepmother.

Police say Norris was last seen by his family Tuesday.

The Cuyahoga County medical examiner's office is working to determine the cause of his death.

Police told WKYC's Tom Beres that there were no signs of violence, alcohol or drug activity in the vehicle. His family said he often went outside into the truck to talk to friends and his cell phone was found in the truck.

A spokesperson for the Lake County coroner said it could take up to three months to determine the cause of Norris' death.

His family and friends were too distraught to talk to the media today about him.

Stay with WKYC for updates to this developing story.