CHICAGO (CBS) — A 63-year-old man has been charged with felony neglect, after a 3-year-old boy accidentally shot and killed his 4-year-old sister with the man’s gun in November in central Indiana.

Lebanon police said Darrell Marberry was sleeping on the couch at his ex-wife’s house on Nov. 29, and had left a handgun on the floor under the couch.

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Darrell Marberry, 63, is charged with neglect, after his ex-wife’s 3-year-old grandson found his gun and accidentally shot and killed his 4-year-old sister. (Source: Lebanon Police)

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Police said his ex-wife’s 3-year-old grandson found the gun, and accidentally shot his 4-year-old sister, Izabella Marie Helem. The bullet went through her left shoulder and her head, and she died five days later.

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Marberry was arrested last week at his home in East Chicago, charged with felony neglect. He was being held at the Lake County Jail, awaiting extradition to Boone County.