Three women were killed Saturday afternoon in San Dimas when their jet ski crashed into a powerboat, injuring four others, authorities said.
The collision between the Sea-Doo watercraft and the boat occurred about 4:30 p.m. in Puddingstone Reservoir at Frank G. Bonelli Regional Park, said Matt Levesque, a Los Angeles County Fire Department inspector.
"It was a pretty severe accident in the middle of the water," Levesque said.
The three victims killed -- ages 25, 35 and 60 -- were not identified, he said. They were pronounced dead at the scene.