OAKLAND — A man fatally shot Saturday night in what police believe was a gang-related attack has been identified as Reuben Aviles of Oakland.

Aviles, 27, also known as Reuben Carrillo, was the father of a 2-week-old son with his live-in girlfriend.

Aviles was last seen at noon Saturday by his girlfriend. She told police he left their apartment "to do something nice for her," Sgt. Rick Andreotti said.

That turned out to be getting his son's name — Angel Reuben — tattooed on his wrist, a relative said.

Aviles, who according to a relative belonged to the South Side Locos, was with two teenagers when he pulled his car into a Shell gas station in the 3700 block of International Boulevard about 10 p.m. Saturday, police said.

They apparently had gotten lost trying to find a party andmay have been looking for directions. Another car that police suspect contained rival gang members — probably Norteos — was already at the station.

It pulled alongside Aviles' car and, without warning, someone inside began shoot-

ing at Aviles and his passengers, hitting all of them, Andreotti said.

The gunfire wounded a 17-year-old gang member and his 15-year-old girlfriend, police said.

Before driving off, the gunman also shot a 33-year-old man who was pumping gas. He had no gang ties, police said.

The teens and man, all slightly wounded, were treated and released Saturday night.

Aviles was declared brain dead Sunday, but doctors at Highland Hospital Oakland kept him on life support until his organs could be removed Tuesday for donation to others.

Based on the blue clothing he was wearing and his tattoos, police believe Aviles was a member of the South Side Locos, a gang with ties to the Sureos. A relative confirmed that information Wednesday.

"I really don't think he was trying to get away from it," a 27-year-old cousin said. "That was the kind of life that he was living."

The cousin said Aviles had been warned that rivals might try to kill him.

"Even though he was already warned, I didn't think something like that was going to happen," the cousin said.

The killing was Oakland's fifth homicide of the year, the third linked to Hispanic gang violence. Last year at this time there were two homicides in the city.

Police and Crime Stoppers of Oakland are offering up to $25,000 in reward money for information leading to the arrest of the gunman. Anyone with information can call police at 238-3821 or Crime Stoppers at 238-6946.