A car thief confined to his home by an electronic ankle bracelet lured a man to his apartment with the promise of a drug deal, then robbed and murdered him, police said.

Samuel Santiago, 18, also robbed a pizza deliveryman in front of his apartment while under the electronic supervision of prison officials, police said.The ankle bracelet transmits a signal to a receiver attached to the telephone if the prisoner moves outside a 100-foot radius of the phone.

"He knew just how far he could go without setting off the alarm," police Sgt. Ron Rewers said Thursday.

Santiago was charged Thursday with murder and two counts of armed robbery. He was jailed Friday without bail.

Santiago began serving a three-year sentence for car theft in 1989 and a month ago was accepted into a home imprisonment program.