Family and friends are searching for a Colorado man who hasn’t been seen since he left his seat at halftime of Thursday night’s San Diego Chargers-Denver Broncos game at Sports Authority Field at Mile High.

Paul Kitterman, a 53-year-old from Kremmling, Colo., attended the game with his son, Jarod, and two friends, Tia Bakke and her boyfriend Tim Ust, according to KUSA-TV. The four traveled to the game together, which is about a two-hour drive, but Kitterman did not drive. In addition to not having a car at the stadium, Kitterman was not carrying a cell phone or credit cards, and had just $50 cash on him, Bakke said.

“He’s absolutely nowhere to be found,” Bakke said. “It’s been the longest, (most) miserable three days of our lives.”

Paul and Jarod had seats in a different part of the stadium from Bakke and Ust. They met up at halftime but said that was the last time they saw him, as Jarod said his father never returned to his seat. After the game, friends and family “scoured the stadium and called security and police, in addition to jails and hospitals in the area,” KUSA-TV reported.

Bakke added that Paul doesn’t have any issues with drugs or alcohol, nor any medical problems.

The Kitterman family has filed a missing persons report with the Denver Police Department, but investigators say they have no reason to suspect foul play, according to KDRV-TV.

Photo via Twitter/@DenverChannel