A Broncos fan has been reported missing since Thursday when he left his family and friends during the halftime of a match with the San Diego Chargers at Sports Authority Field.

Paul Kitterman, a 53-year-old Broncos fan has been missing since the night he went out with his friends and family to watch a game last week. His relatives have since then been left baffled at the idea of a man without any known mental or personal problem just seemingly vanish without a trace.

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Jared Tonneson, the stepson of Kitterman, shared that his step father went to meet his friends during the game's halftime last Thursday. Seeing him leave his seat was the last time anyone in their family had contact with him.

Following Kitterman's disappearance, Tonneson decided to go to the Denver police to file a missing persons report. His family and friends also searched the entire stadium, as well as contacted local hospitals and other medical centers. Fliers were also posted all over the city.

"We just don't know what else to do," shared Tonneson with The Associated Press on Monday.

"Paul is a simple guy, he doesn't like technology, he doesn't get into drama. He's just an easygoing guy," he added.

According to Tonneson, he went to the game with his stepfather with two of their common friends after spending the day working and hunting at one of their other friend's ranch in Kremmling. Both construction workers, the father and son readily agreed to a 100 mile trip to Sports Authority Field after being offered free tickets by a friend to watch the game.

Tonneson claimed that the trip was the first time Kitterman visited the place. In his excitement to immediately leave for the trip, he forgot to bring his cellphone and credit card. He was also only able to bring minimal cash.

Despite these, however, Tonneson insisted that Kitterman knew the phone numbers of their friends and family members. He also asserted that his stepfather would have done things to contact them if he was capable to do that.

In a statement released by Sonny Jackson, the spokesperson of Denver police, he said that foul play was not currently under consideration by the detectives assigned to the case. However, he refused to provide additional information.