Watertown police say a convicted felon is being charged in the slaying of a 70-year-old woman.

They say William Bayarinas, 48, was arrested for burglarizing a Waterbury pizzeria where officers found the victim's car.

Police say they have a warrant out for Bayarinas, who had been released from custody on Jan. 4. They say a few days after stealing 70-year-old Maryann Stanisz’s car and TV set, he fatally attacked her.

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Officials say Bayarinas used to live near Stanisz's home on Bushnell Avenue and they believe he knew the victim's late husband. They say they don't have a motive yet, and have not recovered a murder weapon.

Bayarinas is being charged with home invasion, murder and burglary.

The court is ordering mental health treatment for Bayarinas, who is being held on a $3 million bond.

He is expected back in court on Feb. 6.