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Casey Christie / The Californian

First responders work the scene of a major vehicle accident with fatalities on Highway 58 Saturday morning near the Fairfax Road exit.

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Casey Christie / The Californian

Emergency personnel work the scene of the fatal vehicle crash in the eastbound lane of Highway 58 near the Fairfax Road exit Saturday morning that killed four people.

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Casey Christie / The Californian

Emergency personnel work the scene of a major vehicle accident that killed four people Saturday morning in the eastbound lanes of HIghway 58 at the Fairfax Road exit.

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Casey Christie / The Californian

A tow truck operator attempts to upright this truck that crashed early Saturday morning in the southbound lanes of Highway 99 near 7th Standard Road. The incident caused major traffic snarls for several hours and vehicles were detoured on Highway 99.

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Casey Christie / The Californian

Emergency crews responded to this vehicle crash and fire along with PG

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Casey Christie / The Californian

A major truck accident happened early Saturday morning in the southbound lanes of Highway 99 near 7th Standard Road.

A pair of major crashes, including one that reportedly claimed the lives of four people, has tied up highways 99, 58 and 65 on Saturday morning.

The first crash, involving a tanker truck, happened at 4:03 a.m. on the southbound side of Highway 99 at Highway 65. The California Highway Patrol reported the crash caused the tanker truck to catch fire, leading to the closure of the freeway in both directions. At  8 a.m., the CHP opened the northbound side of the 99, but the southbound side remains closed at 7th Standard Road, and traffic is backed up to Lerdo Highway.

The California Highway Patrol is working a major fatal crash on the westbound side of Highway 58 on the Fairfax Road onramp. KGET is reporting four people have been killed in the crash, which involved a tanker truck. On the CHP's website, one person is confirmed dead with three other major injuries. The 58, however, is open in both directions.

Details developing.