Police said by tweet that all stores had been urged to take shelter in place and people were advised to avoid the area.
“Search teams are routinely looking for all stores that have taken shelter in place and will escort employees and customers into the parking lot,” Milpitas police said in a tweet. “Officers and detectives remain at the scene and are actively investigating this incident.”
Witness Angelo Palma said he and a friend were coming from a church meeting when they decided to stop at the mall. He said they were in Colombia when they saw people running.
“We started running,” said Palma. “Everyone starts to run. A shoot, everyone started running. People were running forward, people were running back. People were falling. It was hectic.
No further information is immediately available. This is a developing story, please check back for updates.