San Francisco resident dies during HARD Summer Music Festival in Southern California

Three people have died after being rushed to area hospitals from the HARD Summer Music Festival in Fontana this weekend, the San Bernardino County Sheriff's Department said.

The sheriff's department confirmed that nine people were transported to area hospitals for medical reasons from the music festival, and three of those people were pronounced dead. Two deaths occurred on Saturday, and one death occurred on Sunday, an official said.

The victims were identified by a coroner's official as 22-year-old Derek Lee of San Francisco, 21-year-old Alyssa Dominguez of San Diego and 22-year-old Roxanne Ngo of Chino Hills.

A cause of death has not yet been determined.

Last year, two women died of suspected drug overdoses after attending HARD Summer in Pomona.

Stay with ABC7 News for the latest details on this developing story.