A 40-year-old mother and her 6-year-old daughter were critically injured this afternoon in a crash in the intersection of Winnetka Avenue and Roscoe Boulevard, near Winnetka Elementary School, the Los Angeles Fire Department said.

As many as three vehicles may have been involved in the accident, said city fire department spokesman Brian Humphrey. A 61-year-old man and 21-year-old woman suffered lesser injuries, he said.

The accident occurred at 1:50 p.m., Humphrey said. Witness told firefighters that one vehicle broad-sided another and they ended up at the southeast corner of the intersection, where the mother and daughter were struck, he said.

The man and woman were in the same vehicle but officials do not know their relationship.