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UPDATE: Southbound US 101 Reopens in Petaluma After Fatal Accident Cleared

PETALUMA (CBS SF) -- CHP said all southbound lanes US Highway 101 in Petaluma reopened Friday afternoon following a two-hour closure due to a fatal accident.

The accident was initially reported north of East Washington Street in Petaluma shortly after 12 p.m., according to CHP.

As of 1:11 p.m., CHP reported that all lanes remains blocked. Traffic is being diverted off to Petaluma Boulevard North to get around the scene of the collision before reentering US 101 in the southbound direction.

CHP later confirmed that the accident was fatal, though authorities have not provided any detailed information regarding the incident.

Authorities have also closed on ramps at Petaluma Boulevard North and Old Redwood Highway. The closure is causing heavy traffic congestion and back-ups are impacting traffic flow on surface streets in Petaluma.

CHP said all lanes reopened at around 2:10 p.m.

Motorists were advised to expect residual delays in the area.

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