A Chicago police officer shot a person armed with a gun in the Roseland neighborhood amid an investigation into a string of robberies, police said.

Around 1:45 p.m., officers tried to conduct an investigatory stop near 111th Place and State Street in connection to a recent string of robberies, when the man they wanted to question ran off.

As police chased the man, they saw him holding a handgun and ordered him to drop it. After the man repeatedly ignored their orders, one of the officers shot him in the leg, police said.

The man was taken to the University of Chicago Medical Center in serious condition, according to police and the Chicago Fire Department.

Two Chicago police officers were taken to OSF Little Company of Mary Medical Center in Evergreen Park, sources said. They were not shot.

The Civilian Office of Police Accountability was investigating, and the officers involved will be placed on routine administrative duties for at least 30 days.