22-year-old Pittsburg man dies after crashing SUV in Orinda

File photo of emergency room sign. Red Emergency Sign at Hospital File photo of emergency room sign. Red Emergency Sign at Hospital Photo: Steven G. De Polo / Getty Image Photo: Steven G. De Polo / Getty Image Image 1 of / 1 Caption Close 22-year-old Pittsburg man dies after crashing SUV in Orinda 1 / 1 Back to Gallery

A man died early Monday morning after being ejected from an SUV in what appears to be a single-vehicle crash in Orinda, authorities said.

The victim, a 22-year-old Pittsburg man, was driving westbound on Highway 24, just west of St. Stephens Dr., at 11:46 p.m. Sunday when he crashed his Kia Spectra sedan into a nearby electrical box and chain link fence, according a Facebook post by California Highway Patrol’s Contra Costa County division.

The vehicle overturned and the passenger was ejected to sustain life-threatening injuries, authorities said.

Officials did not release the name of the man, who was transported to John Muir Medical Center, where a few hours later he was pronounced dead.

The cause of the crash is under investigation and Contra Costa CHP has encouraged anyone with more information to call 925-646-4980.

Emma Heath is a San Francisco Chronicle staff writer. Email: emma.heath@sfchronicle.com Twitter: @emmabheath