(CNN) A Los Angeles police officer died on Saturday following a shooting that occurred while he was off-duty, according to the Los Angeles Police Department.

Officer Juan Diaz was one of two victims who suffered gunshot wounds and were found by an officer shortly before 1 a.m. local time Saturday, the department said in a statement posted to Twitter

The LAPD later confirmed Diaz had died as a result of the shooting, calling him "a dedicated public servant and Angeleno that put service to others above all else."

The circumstances of the shooting remain unclear, but authorities are investigating. According to CNN affiliate KABC , the second victim was wounded but is expected to survive. No arrests have been made, KABC said.

Diaz was last assigned to the LAPD's Professional Standards Bureau, according to another department statement, which called him a hero.

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