Pools of blood were visible outside the two-story brick home Sunday, and the garage door was bent after people had pushed it upward while trying to escape.
Karen Briones was visiting relatives in the neighborhood.
“Girls were crying and screaming, banging on people’s doors asking them for help and to call 911,” she told the Chronicle.
The sheriff’s statement said those hurt were taken to at least five area medical centers or hospitals, some by paramedics and some in private vehicles. Gilliland said some people were shot in the foot, ankle and hip.
Bruno Figueroa lives a few houses down the street and said he heard five to 10 shots. He looked out his window and saw a crowd of at least 30 people running down his street.
“Kids were running everywhere,” he said.
Figueroa said people suddenly began ducking into back yards and behind vehicles in driveways, apparently trying to hide from a car that was slowly coming down the street. Figueroa said that from his upstairs window he could hear the people who were hiding nearby.
“They were crying, yelling, ‘My brother got shot,’ ‘Why did they do this?'” he said.
Figueroa said as soon as the slow-moving car rounded a corner and then sped away, the people who had been hiding gathered back in the street.
Sheriff’s Office spokeswoman Christina Garza told the Chronicle that at least one parent was in the house. Gilliland said investigators were trying to determine if alcohol had been served at the party.