Kansas City, Mo. -

Kansas City police said they are investigating a suspicious death at Arrowhead Stadium.

The incident happened in a parking lot at Arrowhead Stadium during Sunday's game between the Denver Broncos and Kansas City Chiefs, police said.

According to investigators, a man saw someone break into his car, a fight ensued and the man who broke into the car collapsed. Police were not sure how he died.

Police Chief Darryl Forte sent a tweet that stated two people are in custody.