CAJON PASS (CBSLA) — A chain reaction crash on the Cajon Pass in San Bernardino County injured at least 17 people Wednesday morning.

San Bernardino County Fire officials responded to the crash, which the California Highway Patrol says was caused by fog and speed, shortly before 11:15 a.m. on the 15 freeway between Oak Hills and Highway 138.

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According to Caltrans public information officer Terri Kasinga, possibly 20 cars were involved in the multi-vehicle pileup, that first began as a two-car crash.

Fire officials say 10 fire engines and 14 ambulances responded to the scene of the crash.

Officials originally stated that up to 27 people were injured following the crash, but later revised that number to 17.

Two victims are said to have suffered life-threatening injuries, while 15 victims suffered non-life threatening injuries. All victims were transported to local hospitals.

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A mom and her two teenagers, both of whom were dressed in their caps and gowns, on the way to their high school graduation, were offered an escort to their graduation ceremony by a CHP officer after their car was totaled in the pileup.

According to CBS2’s Michele Gile, a funeral procession was also affected by the crash.

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Officials say there were no deaths and no major injuries as a result of the crash.