Police investigate allegation fan hit Kyler Murray during victory celebration

• Man appeared to strike QB after Cardinals' overtime win
• Video shows player stunned but not injured

Police in Las Vegas said Monday they're investigating allegations that a fan in the stands struck Cardinals quarterback Kyler Murray amid celebrations of Arizona's 29-23 overtime victory over the Raiders.

Murray was high-fiving front-row spectators at Allegiant Stadium following Byron Murphy Jr's game-ending fumble return on Sunday when a man appeared to reach out and smack Murray in the face with an open hand. Video showed Murray appeared to be stunned rather than injured. He then attempted to identify the attacker in the mostly happy crowd.