LA MESA, Calif. — Authorities say a crash involving a big rig on a San Diego County freeway has killed two women and injured six other people, including children.

The California Highway Patrol says the truck drifted into oncoming lanes on State Route 125 in La Mesa on Wednesday afternoon. It plowed into two cars before jackknifing.

Two women in one car were killed. Two children and two adults in the other car and two people in the big rig were hurt.

KNSD-TV (http://bit.ly/2w7RFQ7 ) says a 6-year-old girl had a broken neck and wasn’t breathing when paramedics arrived but was breathing when she arrived at a hospital. A 3-year-old girl had minor injuries.

There’s no immediate word on what caused the crash.