SAN FRANCISCO (KRON) — One of the three people who died after attending Hard Summer Music Festival is from San Francisco.
22-year-old Derek Lee died early Sunday, according to the San Bernardino County coroner’s office.
The festival took place this weekend at the Auto Club Speedway in Fontana.
It’s still unknown what caused the deaths but extreme heat hasn’t been ruled out as a possibility.
Alyssa Dominguez of San Diego and Roxanne Ngo of Chino Hills were the other two who passed away following the festival.
Stay with KRON 4 News for more on this developing story.