Man charged with murder in July assault on elderly gas station worker

A suspect being held in the Bexar County Jail has been charged with murder after the Bexar County Medical Examiner's office determined a July assault he carried out led to his victim's death.

According to the arrest paperwork, 69-year-old Keith Lamunyon died following an assault carried out by 43-year-old Robert Viramontes outside of the Shell Gas Station in the 4400 block of West Avenue on July 28.

Lamunyon was working at the gas station when Viramontes came into to buy a quart of beer around 11:30 p.m. According to the affidavit, Viramontes left the inside of the store after purchasing the beer and began causing a scene outside, bothering customers and drinking in the parking lot. Lamunyon reportedly went outside to confront Viramontes after telling a co-worker to call the authorities.

Security footage of the incident revealed that Viramontes began assaulting Lamunyon in the parking lot, beating him repeatedly with his fists. 

At one point, Lamunyon was able to break free and escape the attacks and return to the store. Once inside, he could be witnessed in surveillance video having a difficult time breathing before he collapsed onto the ground, unresponsive.

Viramontes left the parking lot but was picked up down the road by an officer responding to the scene and placed under arrest for outstanding warrants. The officer transported Viramontes back to the Shell gas station where a co-worker confirmed that he was the same person involved in the altercation with Lamunyon.

On September 6, The Bexar County Medical Examiner determined that Lamunyon died on July 29 from heart failure as a result of the assault, and ruled the death a homicide. Police then put together the murder warrant for Viramontes.

Viramontes was expected to see a Magistrate judge to be formally charged Thursday morning.


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