Professional snowboarder Chelone "Chilly" Miller, brother of two-time World Cup overall champion skier Bode Miller, died Sunday from an apparent seizure, according to a U.S. Snowboarding release.

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ABC reported that the Mono County Sheriff's Office confirmed his death Monday in a statement. The cause of death is being investigated, but authorities say foul play is not suspected.

According to the statement, the sheriff's office dispatch received a call around 12:45 p.m. Sunday regarding an unresponsive male in his van. Paramedics, the fire department and deputies were dispatched to the scene, whereupon arrival "it was determined that Mr. Miller was deceased," the statement said.

U.S. Snowboarding said Miller's seizure stemmed from a 2005 motorcycle accident.