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Members of the Chicago Police Department's SWAT team exit a Chicago subway station where police say a gunman standing on a subway platform opened fire on a commuter train, Thursday, Oct. 9, 2014, in Chicago. The shooting occurred at the LaSalle Street Blue Line station in the city's financial district. Chicago Police spokesman Martin Maloney says officers arrested a suspect a short distance away after the shooting and recovered a weapon. No injuries were reported. (AP Photo/M. Spencer Green)

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Police: Assault rifle used fired at Chicago train

CHICAGO (AP) — Chicago Police Superintendent Gerry McCarthy says the man who fired on a subway train as it pulled into a business district station used an assault rifle and had at least 50 bullets with him.