CHERRY TWP — Unionville Volunteer Fire Department dive team members Wednesday joined state police in the search for a missing middle-aged man on state game lands.

The man, from the Slippery Rock Township area, has been missing for three days, police said.

He was last seen at one of the addresses he uses, according to authorities. His cell phone was turned off around the time he went missing.

“We are concerned for his well-being,” said police Cpl. Tim Morando. Foul play is not suspected.

Police found the man's silver 2004 Chevrolet Trailblazer around 9:30 a.m. in a parking area along Branchton Road on Pennsylvania Game Commission property near Route 308 in Cherry Township, Morando said.

There was no one in or around the vehicle, which was locked. Police said they planned to tow it to the barracks in Butler Township and they expect to obtain a search warrant to comb the vehicle for clues.

At first glance, Morando said, there did not appear to be anything suspicious in the vehicle.

About 10 troopers joined in the search Wednesday morning. A police dog was used in the search. As of 2:30 p.m., one officer and the dog were still searching.

Divers were later deployed to search two strip mine ponds in the area.

No divers entered the water, said Nathan Wulff, Unionville fire chief, after it was determined conditions were too hazardous for a dive. Wulff said the surface was frozen, and submerged trees were frozen in the ice.

Water search specialists walked the perimeter of the water but could not find evidence of an entry point, Wulff said.