Chicago police officer exchanges gunfire after checking on traffic accident on NW Side

CHICAGO - Two people were taken into custody after trading gunfire with Chicago police who were responding to the scene of a traffic accident Friday morning in the Union Ridge neighborhood.

Police officers approached a traffic accident around 3 a.m. in the 5200 block of North Nagle Avenue and tried to render aid when a male open fired on them from inside the vehicle, police said.

One police officer returned fire but no one was struck in either shooting, police said.

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Two people fled from the vehicle on foot through an alley and were arrested a short time later, according to officials.

The Civilian Office of Police Accountability is investigating the shooting.

No further information was immediately available.

This story is developing. Check back for updates.