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LOWER SAUCON, Pa. (CBS) — A man charged in the death of his 71-year-old mother in Lower Saucon Township says he acted in self-defense. Authorities say Philip Looby has been charged with criminal homicide.

According to Lower Saucon police, officers were called to the 1900 block of West Point Drive around 9:30 a.m. after receiving a call from Bethlehem for a welfare check.

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When officers arrived, they found Looby and a dead woman inside. She has been identified as Looby’s mother, Maryanne Looby.

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Philip Looby was taken to Northampton County Prison and denied bail. He has a preliminary hearing set for Feb. 4.