By CBS13 Staff

STANISLAUS COUNTY (CBS13) — A fiery head-on crash near Patterson early Thursday morning has left two drivers dead, authorities say.

California Highway Patrol says, a little before 5 a.m., a sedan and pickup truck were involved in a crash along W. Main Street near Jennings Road.

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Officers say it appears the sedan – which was being driven by a 47-year-old Turlock woman – was heading westbound when, for an unknown reason, the driver drifted into the oncoming lane. The sedan was then struck head-on by the pickup truck, which was being driven by a 69-year-old man from Patterson.

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The pickup caught fire after the crash and was soon fully engulfed in flames, officers say.

Both drivers were pronounced dead at the scene, CHP says.

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It’s unclear, at this point, if drugs or alcohol were a factor in the crash.