ALTOONA, Pa. (AP) - Police say a little boy is dead after a man set fire to a family's Pennsylvania home thinking his ex-girlfriend was inside.

Altoona police say 62-year-old Aaron Wilson Dishong set the fire in an attempt to kill his ex but only two young children and their mother were inside.

Three-year-old Daryl Etchison Jr. was killed in the blaze. Authorities say his mother jumped from a third-floor window to save herself and her 2-year-old daughter.

Dishong allegedly incriminated himself during a phone call with a witness that was monitored by police. Investigators say he had been stalking his ex-girlfriend, who had a restraining order against him.

Dishong was jailed Thursday night on homicide, arson and related charges. He denied setting the fire following his arraignment.

Etchison's mother remains hospitalized.

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