ROUGH CUT - NO REPORTER NARRATION Two Chicago police officers were struck and killed by a passing commuter train on Monday (December 17) while investigating a report of gunfire near railroad tracks on the city's Far South Side, police said.

The two officers, Eduardo Marmolejo, 37, and Conrad Gary, 31, both assigned to the Chicago Police Department's Calumet District, were pursuing a suspect along the Metra railway line when they were killed, police said.

City police Superintendent Eddie Johnson told a news conference there was no rail stop at the location where the officers were struck, and the train was probably traveling at 60 to 70 miles per hour (37 to 44 km per hour) at the time.

The individual the policemen were pursuing was ultimately arrested, and a weapon was recovered, police said.