OAKLAND — A series of unrelated shootings Saturday left one man dead and sent five others to a hospital, police said.

Police responding to reports of gunfire found a 41-year-old man shot in the 1200 block of 83rd Avenue about 10:45 p.m. Saturday. The man was taken to a hospital and pronounced dead about 30 minutes later.

Police have determined no motive in the shooting, and they have no suspects in custody.

About 3:15 p.m. Saturday, police responded to a shooting at a carwash in the 9700 block of Mountain Boulevard. Investigators said four men were involved and that three remained in a hospital Sunday.

"I've been coming here for 18 years and never saw police have to come out here once," said a carwash patron who asked to remain anonymous. He said he was not at the shooting but discussed it with people who were.

"It was over nothing," he said. "A big ol' muscle-bound dude pulled up and saw some young players sitting there, and he said, 'Why you looking at me?' They said, 'We ain't looking at you, man, we just checking out your ride. You got a nice ride.' "... And soon enough, the big man reaches into his car and pulls out his gun, shoots at those young players and misses. They shot back and hit him. Now he's lying on the ground, bleeding all over and he can't feel his arms and he can't feel his legs. And for nothing."

The carwash owner, who also asked to remain anonymous, said that he had run the business in that location for 20 years without having a problem.

"It was just random," the owner said. "It could have happened in front of City Hall. Two guys in a fight over looking at each other."

He said that no bystanders were hurt in the shooting.

A 17-year-old San Leandro boy remained on life support in a hospital Sunday after he and his 20-year-old cousin, also from San Leandro, were shot at while driving in the 4500 block of Bancroft Avenue just after 4 a.m. Saturday. Another vehicle pulled alongside and an occupant started shooting at them, police said. The cousin was not injured, police said.

A 17-year-old Oakland girl is expected to recover despite being in critical condition after a drive-by shooting about 12:30 a.m. Saturday near the corner of 58th Avenue and Eastlawn Street, police said.

Police and Crime Stoppers of Oakland are offering as much as $10,000 for information leading to the arrest of suspects in any of the cases. Crime Stoppers guarantees anonymity to callers.

Anyone with information is asked to call police at 510-238-3821 or Crime Stoppers at 510-777-8572 or 510-777-3211.