Motorcyclist Killed On Highway 101 Crash In Marin County

MARIN COUNTY, CA – A San Francisco woman on a motorcycle was killed when she was struck by two vehicles Monday night on Highway 101 in Marin County, a California Highway Patrol officer said.

The Marin County Sheriff's Office-Coroner Division identified the motorcyclist as Marie Noelle Sigenthaler, 29, of San Francisco. Sigenthaler was riding south on the highway north of Tiburon Boulevard around 10 p.m. when she was struck from behind by a vehicle in the No. 2 lane and was ejected onto the No. 1 lane, CHP Officer Andrew Barclay said.

The driver of the Volkswagen stopped, Barclay said. A witness said a silver Toyota Prius hit the motorcycle first and fled the scene, but that is still under investigation, he said.

The official cause and manner of death were pending toxicology results and the conclusion of the investigation by California Highway Patrol.

"The Marin County Sheriff’s Office and personnel of the Coroner Division offers our condolences to the family and friends of Ms. Siegenthaler," Chief Deputy Coroner Roger G. Fielding said in a statement.

The collision closed the three left lanes until just after 1 a.m. Tuesday, Barclay said. Anyone who witnessed the fatal crash was asked to call the Marin CHP at 415-924-1100.

Bay City News Service contributed to this report.

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