Arkansas City police say an Oklahoma man died while working inside a cattle pen at Creekstone Farms.

Emergency crews who responded to a call of a man hurt by a cow early Thursday found 57-year-old Richard Gates of Blackwell, Okla., unresponsive in the cattle pen. He died later at South Central Regional Medical Center.

Police say Gates was inside the cattle pen trying to move cattle when he was knocked down and injured by other cattle. An autopsy will determine his cause of death.