By Robin Rieger

SLATINGTON, Pa. (CBS) — Slatington police say a mother is charged with involuntary manslaughter and related offenses in the shooting death of her 19-month-old son Saturday night.

Police say 26-year-old Holly Pallone, who lives in an apartment above an auto parts store on Walnut Street, claims she was sitting on her bed taking the bullets out of a 44-caliber gun she planned to sell for $200 to buy drugs, when the gun fired.

According to police, a bullet from the gun went through the mattress Pallone was sitting on and struck her son Anthony Pallone Junior in the forehead, killing him.

Police say he was lying in a pack and play type crib, close to the ground.

Pallone, who is new to the area, called 9-1-1 and was later arrested and charged.

A district judge set her bail at $1-million Sunday.

An autopsy on the boy is expected to be performed Monday.