San Bernardino County sheriff’s detectives are looking for the gunman who critically wounded a person during a birthday party held at an Airbnb in Rancho Cucamonga.

The shooting happened just after 2 a.m. April 6 in the 13200 block of Flagstaff Drive, a news release said. There was a fight that resulted in a man being shot in the chest. Partygoers took him to a hospital, where he was in critical condition Thursday.

Arriving deputies detained people who were attempting to leave the home that had been rented out for the party. But several others fled before deputies arrived and have not come forward.

Investigators ask anyone with information on the shooting to call detectives at 909-477-2800 or leave tips anonymously with WeTip at 800-782-7463 or the website at wetip.com.