A woman was drunk when she drove her large family off a Northern California cliff last month and her wife and several children had large amounts of a drug in their systems that can cause drowsiness, authorities said Friday

Preliminary toxicology tests found Jennifer Hart had an alcohol level of 0.102, said California Patrol Capt. Bruce Carpenter. California drivers are considered drunk with a level of 0.08 or higher

Toxicology tests also found that her wife Sarah Hart and two of their children had "a significant amount" of an ingredient commonly found in the allergy drug Benadryl, which can make people sleepy. Toxicology results for a third child killed are still pending, Carpenter said.

Carpenter said none of the car's occupants were wearing seatbelts.

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