June 18 (UPI) -- Daredevil motorcyclist Alex Harvill has died after crashing his bike while practicing for an event where he was planning an attempt to break a world record, authorities said. He was 28.
Grant County Coroner Craig Morrison confirmed in a statement from the sheriff's office that Harvill, a Ephrata, Wa., resident, died Thursday morning while performing a jump at the Grant County International Airport, which is about 185 miles east of Seattle.
An autopsy is to be performed Friday to confirm the cause of death, the statement said, adding his family has been notified.
"Our deepest sympathies go out to Alex's family, friends and loved ones," the sheriff's office said.
Harvill died while practicing to break a Guinness World Record by jumping more than 351 feet later that day at the Moses Lake Airshow, which opened Thursday and runs until Saturday.
On the event's Facebook page, organizers said Harvill was injured during his warm-up prior to the jump and was taken to the hospital.
"Our hearts are with Alex and his family," the event said.
Harvill, a California native, holds the Guinness World Record for longest dirt-to-dirt motorcycle ramp jump, jumping 297.5 feet on July 6, 2013, according to the recorded-keeping organization.
