The shooting took place just before midnight on Friday.
A witness told ABC7 that she saw teenagers who appeared to be gathered for a graduation party at a hookah bar near the corner of North Palm and Highland Avenue.
She said after the initial shooting a vehicle pulled into the gas station where she was pumping gas and a person inside opened fire there shooting two girls. The witness requested to not be identified.
A statement from police confirmed the crowd of people was in the area attending a party.
There was a massive response from law enforcement which remained on-site on Saturday morning.
One report says the deceased is a 20-year-old male whose identity has not yet been officially confirmed.
1 person was killed, 8 others shot at a party in Highland in #SanBernardino County last night. SBPD says they’re looking for the suspect(s).
(Police initially said 10 victims)
Stay w/ @NBCLA for updates. pic.twitter.com/ZPo9LrTKTf
— Lauren Coronado (@LaurenmCoronado) May 21, 2022
Several of the wounded transported themselves to local hospitals and were treated for non-life-threatening injuries, according to authorities.
No arrests have been made and the motive for the shooting is so far unknown.