Butler police are investigating a shooting Monday night on the city’s east side that left one person seriously injured, authorities said.

The victim, whose name was not released, was taken to Butler Memorial Hospital with a gunshot wound to the chest. The person’s condition was not known.

Police did not file an incident report and they declined to comment this morning.

Authorities were notified about 7:40 p.m. after the victim apparently showed up at the hospital. It was not immediately known how the victim got there.

Shortly after, hospital officials called to report they had someone there with a gunshot wound.

The victim later was reportedly taken by medical helicopter to an unknown Pittsburgh hospital.

Butler Memorial Hospital spokesman Connie Downs was out of the office and was unavailable for comment this morning.

The shooting reportedly happened shortly after 7 p.m. at or near the intersection of South McKean and East Cunningham streets.

An office worker at the Specialty Outreach Services youth center at 113 S. McKean St., said this morning that she saw two Butler police cruisers near the intersection when she left work about 8:15 p.m. Monday.

She said she did not hear or see anything suspicious earlier that evening.