After a brief police pursuit ended with a fatal crash Sunday night, Denison Police say they are treating the incident as a criminal investigation as the wreck may not have been an accident.

“The evidence that we’re seeing indicates that it might not have been an accident — that it could have been intentional — so that’s what we’re looking at right now,” Denison Police Lt. Mike Eppler said.

Police identified the driver as 50-year-old Carl Duncan of Antlers, Oklahoma, and the passenger as 21-year-old Judson Duncan, the driver’s son. Judson Duncan died at the scene, and the driver was transported via helicopter to a Plano hospital. Eppler said Monday afternoon that from last he heard, the man’s injuries were not life-threatening.

The Sunday incident began shortly before 8 p.m. when personnel from the Holiday Inn Express in Denison contacted police.

“It was a welfare concern/suspicious person type call that a car had been in the parking lot with guys in it for a couple of nights, and they wanted us to check on them,” Eppler said.

After officers responded and made contact with the men, one of the officers went back to the patrol vehicle to perform routines checks on the individuals, Eppler said. While the officer was doing the check, the vehicle took off and a pursuit began.

The vehicle entered into northbound U.S. Highway 75 and a few minutes and couple miles later, the vehicle crashed into a barrier on the right shoulder under the State Highway 91 overpass. Eppler noted the vehicle’s speed exceeded 100 mph.

The incident is still under investigation, but police located evidence that leads them to believe that the crash wasn’t an accident.

“Of course I can’t really specify what we found just yet, but we found some evidence that leads us to believe it may not have been an accident,” Eppler said.

Eppler estimated the highway was closed for nearly three hours that night as crews worked the scene. He said based on what investigators find, criminal charges could be filed at a later point.

“When we finish our investigation into that, we will submit it to the DA’s office and let them view it for any possible charges,” Eppler said. “It’s still under investigation right at this point.”