Umatilla County Sheriffs are investigating shooting that left numerous bullet holes in a residential trailer Thursday morning.

Authorities say a 19-year-old woman called 911 to report that shortly after midnight a man knocked on the door of her home in the Locust Trailer Court just outside of Milton-Freewater (the park is located at 1501 Elizabeth Street).

After hearing the knock, the woman said a man fired a number of shots into the trailer. No one was injured.

Sheriffs say there was an unidentified man in the trailer with the woman at the time of the attack.

Investigators say the suspect may have had an accomplice with him, and they believe it's gang-related.