CHICAGO — The Civilian Office of Police Accountability is investigating a shooting in Belmont Cragin that wounded one US Marshal and a K-9.

Investigators responded in the 5200 block of W. Belmont, where members of Chicago police and the US Marshals Great Lakes Regional Fugitive Task Force attempted to apprehend a wanted offender.

Amid the arrest, police say the offender fired shots, striking a US Marshal and a US Marshal K-9.

A CPD officer returned fire but did not strike the offender. The officer will be placed on routine administrative duties for at least 30 days, as is standard.

Authorities took two people into custody.

After the shooting, the marshal rushed the K-9 to a veterinary clinic, Chicago Fire Department spokesman Larry Langford said. He said the marshal then realized he had been shot in his hand.

The marshal refused to be taken to the hospital and was treated and released at the scene.

Fraternal Order of Police Union President John Catanzara said the K-9 is expected to survive.

“(The K-9) will probably require some surgery but even dogs are considered police officers. They put themselves in harm’s way for us to survive and that absolutely seems to be the case here where the dog actually took the worst of this instead of his handler,” Cantanzara said.

The Associated Press contributed to this report.