SUISUN CITY (CBS SF) – One person was killed in a big-rig crash on westbound state Highway 12 in Suisun City early Tuesday morning, according to the California Highway Patrol.

Officers are still at the scene of the crash, which occurred when one big-rig rear-ended another on Highway 12 near Emperor Drive, CHP Sgt. Jason Hekker said.

READ MORE: UPDATE: Fawn Fire Grows to 6,850 Acres in Shasta County; No New Structures Destroyed

The crash was reported shortly after 5 a.m., a Suisun City police dispatcher said.

All lanes of westbound Highway 12 in Suisun City were closed between Walters Road and Emperor Drive, according to Suisun City police.

READ MORE: Costco Limits Water, Toilet Paper, Other Purchases Due To Supply Chain Delays

One of the trucks involved in the crash had a Producers Dairy logo, Hekker said.

Authorities were estimating that the westbound lanes would be cleared around noon, Hekker said.

MORE NEWS: SF City Planners Won't Allow Taqueria El Farolito In North Beach Due To 'Chain Store' Ban

(Copyright 2013 by CBS San Francisco and Bay City News Service. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)