ST. LOUIS PARK, Minn. (AP) — A construction worker and a 9-year-old boy who has become a fixture around a construction site this summer are being hailed as heroes after stopping a pit bull attack in the Twin Cities.

Marshall Schmitz turned to the construction worker, Derrick Johnson, for help when he saw a pit bull attacking a man walking his dog in St. Louis Park on Monday. The pair's quick action helped prevent further injury to the elderly man, but they weren't able to save his little dog.

Johnson tells KARE-TV that he wrestled with the pit bull until two police officers arrived.

The officers subdued the dog and took it to an animal hospital, where it'll stay until an investigation is complete.

Police say the attack victim has been released from the hospital.