BOYLE HEIGHTS (CBSLA) — A perimeter was set up Tuesday night as police responded to an officer needs help call in downtown Los Angeles after an officer-involved shooting took place in the area of 1st and Gless streets.

Around 10 p.m., officers with the Hollenbeck Division attempted to stop a pedestrian when there was an exchange of gunfire. It was not immediately disclosed why the officers attempted to stop the pedestrian, described as a Hispanic man.

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One officer sustained minor injuries, not from gunfire, and SWAT and K-9 officers continued searching for the suspect early Wednesday morning.

It was not immediately clear if the suspect was struck by gunfire.

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Drivers and residents were told to avoid the area and to expect a large police presence.

Metro Gold Line service in the area was affected by the search. Trains skipped the Pico/Aliso Station and no trains were operating between the Mariachi Plaza/Boyle Heights and Little Tokyo/Arts District stations.

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(© Copyright 2019 CBS Broadcasting Inc. All Rights Reserved. City News Service contributed to this report.)