California Highway Patrol press release: 

On June 26, 2017 at approximately 6:20 p.m., a 39 year old Male of Eureka, was riding his Motorcycle Southbound on Broadway near Sunset Road.  At the same time 59 year old Lee Xu Lysathong, of Eureka, was driving her 2006 Honda Odyssey northbound on Broadway in Eureka.  For reasons still under investigation the Motorcycle collided into Honda Odyssey.  The Motorcyclist was ejected from the motorcycle, and the motorcycle continued into a parking lot and collided into a parked vehicle.  The driver of the Motorcycle was transported to St. Joseph Hospital, where he was pronounced dead. 

DUI is not a factor in this traffic collision.  Humboldt Area CHP will be the lead investigating agency in the collision.