A Mexican national twice opened fire on a Los Angeles County Sheriff's deputy who was driving home on the eastbound Pomona (60) Freeway in South El Monte, the department announced.

The deputy, who has not been identified, was not injured. He returned fire, wounding the suspect who has been identified as 25-year-old Armando Gonzalez.

The deputy was driving home at about 2:20 p.m., when Gonzalez pulled his Ford Expedition up along the left side of the deputy's car and motioned to the deputy. The deputy motioned back as if to ask what the suspect wanted.

The deputy said he saw the suspect reach down, and fearing that he was arming himself, the deputy accelerated away from the suspect. The suspect again caught up along the left side of the deputy's car, pulled out a handgun, and fired at the deputy. The deputy returned fire.

The deputy pulled away from the suspect and ultimately pulled over on the side of the freeway to use his cell phone to call for help.

While the deputy was stopped on the side of the freeway, the suspect pulled up behind the deputy's car, and fired additional shots at the deputy, before driving away from the scene.

Deputies later arrested Gonzalez, who had pulled over north of the freeway and was observed by citizens with blood on his shirt. He head been hit in the face by gunfire from the deputy. A handgun was recovered from inside the suspect's car.