By: Andy Slater

Update 4/21: Miami PD says "we are currently looking into the matter."

Update 4/25: Miami PD says "Currently, there is not an open IA investigation on Sgt. Faris"

An off-duty Miami police officer had a front-row seat to a violent road-rage attack Monday night and did nothing, according to a source.

The incident started when a convertible drove by the Pembroke Pines house of Mario Perez, a regional manager at a security firm and former Hialeah cop. Perez, 49, became upset because the car was "extremely loud" in his neighborhood at 16200 Southwest 6th Street, according to the arrest report.

Officers say Perez got in his car and chased down the convertible driven by a 19-year-old man. According to a source, Miami police officer, James Faris, also jumped into Perez's car.

When the teenage driver was waiting for the security gate to open, Perez allegedly got out of his car, pointed a gun at him, and then punched him in the face.

Perez then walked to the other side of the car and allegedly put a gun to the neck of a 15-year-old passenger, the report says. Perez allegedly told the teenager he had 10 seconds to start the car or he was going to kill him. The 15-year-old passenger wound up getting pistol whipped by Perez.

Before the incident was over, Perez walked back to the driver and allegedly told him "if I ever see you again, I'm going to [expletive deleted] kill you." Perez then punched the driver in the face for second time, the report says.

According to a source, Faris, the off-duty Miami police officer who was with Perez, did not intervene and has yet to inform his department of what happened.

Perez is still behind bars being held without bond. He's facing serious charges including aggravated battery with a deadly weapon.

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