Human remains found inside a truck in a body of water in Brazoria County are believed to be that of missing Joe Roy McMillian, Panola County Sheriff Kevin Lake said Thursday.

Panola County investigators, along with local authorities in Brazoria County and the Texas Rangers, are working to investigate the scene. Lake said no evidence of foul play has been discovered.

Lake said his office received a call Thursday morning from authorities in Brazoria County after a car matching the one driven by McMillian was found in a body of water in their jurisdiction.

Officials in Freeport found McMillian’s truck while recovering two other vehicles that had gone off the roadway in a sharp curve and entered a deep bayou, Lake said. They found human remains in the truck, Lake said, and based on evidence believe they are McMillian.

“At this time, no evidence of foul play has been discovered, as it appears to be a vehicle accident, but the scene is being processed by the Texas Rangers to confirm that,” Lake said. “Brazoria County officials advised Panola County investigators that the location where Mr. McMillian’s truck was discovered is in a curve in the roadway, where they work numerous auto accidents, which results in vehicles traveling from the roadway into the water.”

McMillian was last seen May 21 on FM 1970. He left his residence off County Road 302 to run errands and never returned, the sheriff’s office said. Police had been searching between Panola County and the Houston area, as they believed he may have been traveling towards family who live in that area.

Lake thanked everyone who helped search for McMillian.

“Please keep the family of Mr. McMillian in your prayers as they now deal with this tragic news,” he said. “Also continue to pray for the families of other missing persons from our area that closure can also be brought to their families.”