US police say a woman from Texas has shot dead her two daughters before being shot and killed herself by officers.
The incident happened about on Friday afternoon in front of a home just outside the Houston suburb of Fulshear.
The Fort Bend County Sheriff's Office identified the mother as 42-year-old Christy Sheats and her daughters as 22-year-old Taylor Sheats and 17-year-old Madison Sheats.
Sheriff Troy Nehls says the shooting apparently climaxed a family argument, but the reason for the argument remains unclear.
Nehls says the two younger women had already been shot when a Fulshear police officer arrived and saw the mother with a gun in her hand, apparently preparing to shoot one of her daughters again.
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The officer shot and killed the woman.
No identities have been released.
