It happened on the back patio of Las Palmas Sports Bar on Ponderosa Lane at Consuela Drive near the Southwest Freeway.
Houston police said the bar is also an after-hours club, and the argument that led to the shooting started around 6am.
According to detectives, two men were playing cards in the patio area. Police think the gunman was friends with one of the card players, and he reportedly started arguing with the victim, whom his friend was playing against.
The victim said he didn't want any trouble, and another man tried to intervene. But the suspect still pulled a gun.
"For no apparent reason, he just started shooting," HPD Sgt. Richard Rodriguez said. "He shot the individual who was playing cards and the individual who was trying to intervene as well."
Both of those men were pronounced dead at the scene.
Detectives said the shooter ran out of the bar and took off with three other men. Officers didn't get a good description of their vehicles, and they are asking anyone with information about the shooting to call HPD Homicide or Crime Stoppers.
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