Overturned pickup truck.
A man died after a rollover vehicle crash in the Santa Ynez Valley Thursday afternoon. Authorities suspect the driver had a medical emergency that caused the crash.  (Santa Barbara County Fire Department)

The driver of a pickup truck was pronounced dead Thursday afternoon after his vehicle ran off the roadway and overturned in the Santa Ynez Valley, according to the Santa Barbara County Fire Department.

Firefighters and other emergency personnel were dispatched at 3:20 p.m. to the crash scene on Highway 154 east of Zaca Station Road, said Mike Eliason, a Fire Department spokesman.

“The male driver of the Chevy pickup is thought to have suffered a medical emergency while driving,” Eliason said.

The driver — a 68-year-old Santa Maria man — had stopped his vehicle on the eastbound shoulder of the roadway, according to CHP Officer Michael Griffith.

The vehicle then traveled down a steep dirt embankment and across a field, where it struck a metal guardrail and rolled over, coming to rest on its roof, Griffith said.

Firefighters and paramedics provided extensive medical treatment, Eliason said, but the man died at the scene,.

His name was being withheld pending notification of relatives.

The crash remained under investigation, and anyone with information about it is asked to contact the Buellton CHP off at 805.688.5551.

Noozhawk executive editor Tom Bolton can be reached at tbolton@noozhawk.com. Follow Noozhawk on Twitter: @noozhawk, @NoozhawkNews and @NoozhawkBiz. Connect with Noozhawk on Facebook.

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Tom Bolton, Noozhawk Executive Editor

Noozhawk executive editor Tom Bolton can be reached at tbolton@noozhawk.com.