Woman threw daughters, one who died, on to freeway after killing partner, say LA police

Danielle Johnson reportedly tossed infant and nine-year-old out of moving SUV after killing Jaelen Chaney, and then died by suicide

An infant girl and her nine-year-old sister who were found on a busy Los Angeles-area freeway were thrown from a moving SUV, and investigators believe their mother was responsible and died by suicide after also killing her partner, authorities said Tuesday.

The eight-month-old was pronounced dead at the scene early Monday, and the older girl was taken to the hospital for moderate injuries, according to law enforcement officials.