A gunman who exchanged gunfire with Los Angeles Police Department officers in Boyle Heights was at large Wednesday morning following a more than six-hour search.

Around 10 p.m. Tuesday, officers with Hollenbeck Division attempted to stop a pedestrian in the area of First and Gless streets and there was an exchange of gunfire, police said.

The man ran off and a perimeter was set up from First to Fourth streets and Pecan and Utah streets. SWAT and K-9 officers conducted a search that ended around 5 a.m., the LAPD said.

No arrests were reported.

It was unclear if the suspect was struck by gunfire, police said.

One officer suffered a minor injury not related to gunfire. The officer was taken to a hospital for treatment and released, police said.

A description of the shooter was not disclosed.

Metro Gold Line service in the area was temporarily affected by the search, with trains skipping the Pico/Aliso Station and no trains operating between the Mariachi Plaza/Boyle Heights and Little Tokyo/Arts District stations, the agency said.