HASTINGS, Neb. — A 30-year-old Nebraska woman whose oldest son is charged with killing his little brother has been sentenced to prison.

On Tuesday in Adams County District Court in Hastings, Amanda Pecor was given 59 to 60 months. She’d been convicted of felony negligent child abuse resulting in injury. Her 31-year-old boyfriend, Matthew Edwards, was given the same sentence last month on the same charge.

Pecor’s 9-year-old son is accused of fatally shooting his 4-year-old brother, Beau, on April 18. Court documents say officials had warned Pecor and Edwards before the shooting to lock up all knives and other sharp items and to have no guns in the house.