PUEBLO – Authorities have arrested a woman suspected of stabbing her young daughters before plunging her car into a river in southeast Colorado with the children inside.

The Colorado Bureau of Investigation says 33-year-old Christine Martinez was arrested Tuesday on charges of attempted murder, assault, child abuse and arson.

Otero County sheriff’s investigators say she’s suspected of stabbing her 8-year-old and 10-year-old daughters at their home in Manzanola on March 31 before leaving them in the vehicle. She’s accused of then driving into the Arkansas River.

A passerby reported the crash, and emergency responders rescued the two girls. Martinez was found outside the vehicle.

A woman who answered the phone at the Otero County jail declined to say if booking documents list an attorney for Martinez.