A man armed with a rifle exchanged gunfire with police Sunday in Boyle Heights, authorities said. WATCH HERE WATCH HERE"Officers encountered a suspect, at which time there was an officer-involved shooting," police said. "The suspect fled and a large perimeter was established." A K-9 unit and SWAT team were dispatched to the location to search within the perimeter. Police later said multiple individuals" were detained within the perimeter and investigators were attempting to determine their involvement in the incident.