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HOUSTON — Homicide detectives  shared new details Tuesday regarding their investigation into an argument that escalated to gun violence outside the La Union restaurant in southwest Houston earlier this month.

Johnny Paramo Torres, 25, was pronounced dead at the scene following the shooting on Aug. 4.

The Houston Police Department has released surveillance footage that shows four possible suspects including a woman and three men. Investigators request the public’s help with identifying the suspects who are believed to be in their late teens to early 20s.

Police said two of the suspects dined at the restaurant nearly an hour before the shooting on Aug. 4 while the female suspect stood in the parking lot. The men—now accompanied by a third suspect— camped out by the register while the woman waited outside in a car.

“The guys actually wait by the register,” Det. Katie Clark said. “They don’t go sit down for the second time, they don’t eat— nothing. They don’t even pay for food.”

Clark said Torres and his brother came to pickup takeout at about 7:45 p.m. The brothers had been inside the restaurant for about 10 minutes when a confrontation broke out between them and the three suspects. The argument became physical and the three men left with Torres following behind them.

“It looks like that want to fight and they take it out to the parking lot,” Clark said.

The confrontation continued, and at some point, the third suspect pulled out a pistol and shot Torres in the head. He then fired at the victim several more times, police said. Torres was pronounced dead at the scene.

Clark said the suspect left the scene traveling northbound on Wilcrest in a silver Infinity.

“We believe the suspects live in the area due to the time it took them to come back to the restaurant with the shooter,” Clark said.

Clark said investigators have no motive for the shooting at this time. The victim’s brother and the restaurant staff claim they had never seen the men before.

Anyone with information regarding the case or the identities of the suspects is asked to contact the HPD Homicide Division at 713-308-3600 or Crime Stoppers at 713-222-TIPS.