Former Rancho Palos Verdes resident Sho Funai was found dead Sunday in San Diego after a suspected hit-and-run accident.
The 23-year-old's body was found along Interstate 8 in the Ocean Beach area by a passerby.
An 18-year-old woman who allegedly got behind the wheel after drinking alcohol was arrested in the wake of the accident, a California Highway Patrol spokesman reported Monday.
Nikolette Kristina Gallo, of Rancho Penasquitos, was taken into custody about noon Sunday at her home, nearly eight hours after Funai's body was found alongside the freeway, CHP public-affairs Officer Art Athans said.
Funai is believed to have been attending a San Diego university. A LinkedIn profile for a Sho Funai lists him as a graduate of University of California, San Diego, as well as a former assistant coach at . He was finishing his graduate thesis at UCSD, NBC San Diego reported.
It was unclear why Funai, a PV High alumnus, ventured onto the shoulder of the interstate on foot.
"How the pedestrian got out there, we're not sure yet," Athans said.
Gallo told investigators she hit was she thought was a discarded sofa while on her way home from dropping off a friend in the beach area, Athans said.
She saw news coverage of the pedestrian fatality the next morning and later contacted the Highway Patrol. Investigating officers got a statement from the teen, who allegedly admitted to drinking before the accident. Gallo's 2007 Toyota Camry had significant front-end damage, according to Athans.
Gallo was booked on suspicion of felony hit-and-run and driving under the influence. She was later released on bail.
Watch the full NBC San Diego video here.
—City News Service contributed to this report.