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Police seek motive, suspect in slayings of two sisters, ages 12 and 17, whose throats were slashed

September 3, 2009 |  5:44 pm

Police are trying to figure out who killed two sisters, ages 12 and 17, who were found with their throats slashed at a house in Sun Valley.

The girls' mother is at a local hospital with knife wounds, and the Los Angeles Police Department has described her as a "person of interest" in the slayings. Detectives said the woman, who is in serious condition with wounds to her upper body and wrists, is not a suspect but they want to question her.

She has not been identified.

Det. Gus Villanueva said that although detectives have yet to determine a motive for the slayings, Villanueva said, “the stabbing weapon is in custody.” 

Det. Pat Barron, who oversees homicide investigations in the LAPD’s Foothill Division, said investigators are seeking to question some other people.

Villanueva said the sisters and their mother were discovered by police responding to a 911 call about 11:40 a.m. Wednesday reporting an assault with deadly weapon at a house in the 7800 block of Irvine Avenue.

A visitor to the house saw one of the girls lying on the floor after looking through a window. One of the girls was found in the main house and another in a garage-like building converted into living quarters. Both girls were pronounced dead at the scene.

The LAPD and the county coroner’s office did not identify the girls because officials are still seeking to contact their relatives.

Villanueva said a 14–year-old sibling of the two girls who also lived on the property was not at the crime scene and has since been accounted for by detectives.

—Richard Winton

Related: The Homicide Report