A motorcyclist is under arrest, accused of driving drunk, after his passenger fell off the bike.
Police were called to Fresno and Alluvial just after midnight.
Officers found the passenger, a 24-year-old woman lying on the side of the road.
Police say the woman and motorcycle driver, Vernon Erlewine had been drinking in the river park area.
The woman fell off the motorcycle and hit the asphalt causing serious injuries.
Police say she was wearing a helmet, but it popped off her head.
Erlewine did stop when the woman fell off and was arrested
The woman was transported to the hospital in critical condition.
The driver faces dui charges and police also say he had a warrant for unrelated charges.