BALDWIN PARK, Calif. – Authorities reported that an officer was fatally shot, and another was injured while responding to an incident involving a man firing a rifle and an unresponsive, wounded man lying on the sidewalk in a city east of Los Angeles.

According to Los Angeles Sheriff Robert Luna, the officers encountered gunfire upon arrival at the scene Saturday night, prompting at least one officer to return fire.

The Los Angeles Sheriff’s Department stated that an adult male suspect was injured but has been apprehended. The suspect, whose identity has not been disclosed, was transported to a hospital and was in stable condition as of Sunday, according to a department statement.

Officials on Sunday identified the slain officer as Samuel Riveros. The man found wounded on the sidewalk was taken to a hospital where he died. His identity is being withheld pending next of kin notification, the Los Angeles County Sheriff’s Department said.

Luna and Baldwin Park Police Chief Robert López held a news conference shortly after the shooting.

López said the officer who was killed was an “amazing man” who liked snowboarding and traveled to see Dodger games across the United States.

The injured officer is in good condition and with his family, he added.

“It’s extremely tragic to have to deal with this,” López said.

It is unclear how many shots were fired, but the weapon used in the shooting has been recovered, authorities said.

The Los Angeles County Sheriff’s Department is investigating the incident as a double homicide.