Brockton police are investigating a shooting that wounded six people during a large fight on May Street shortly before 2 a.m. Saturday, according to statements from the department. Officers responding to multiple 911 calls found the victims, who were taken by ambulance to area hospitals. Their identities and conditions have not been released. Preliminary findings indicate that more than a dozen individuals were involved in an altercation before gunfire erupted. The scene remained cordoned off for several hours as investigators collected evidence and interviewed witnesses. No arrests have been made, and authorities are urging anyone with information to contact the Brockton Police tip line at 508-941-0200.