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Gregory Bull, Associated Press
Cody Vales, 16, looks down as he talks about the two neighborhood boys involved in a stabbing Tuesday, Jan. 17, 2012, in El Cajon, Calif. A 10-year-old boy is suspected of fatally stabbing a 12-year-old friend in the chest Monday with a kitchen knife, authorities say.

EL CAJON, Calif. — The San Diego County district attorney's office says a child has been charged with murder and felony assault in the fatal stabbing of a 12-year-old boy.

Spokesman Steve Walker declined to say Wednesday if the defendant is the victim's 10-year-old neighbor who was taken into custody shortly after the stabbing. The neighbor is the only one to have been identified by homicide investigators as a suspect.

The 12-year-old died Monday, little more than an hour after he was stabbed in the 10-year-old's driveway in a quiet, kid-friendly neighborhood in El Cajon, east of San Diego.

A detention hearing is scheduled Thursday morning in juvenile court.