Washington DC: In a fit of rage, an 11-year-old boy shot his 65-year-old grandmother in the head before killing himself with the same gun. Apparently, the boy got angry after his grandmother ordered him to clean his room. Also Read - Pet Cat Brings Home Two-Headed Snake, Leaves Florida Family in Shock

According to a Daily Mail report, the victim’s husband told the police that the boy killed his wife after she asked him (the boy) to clean his room, adding that “he was being stubborn about it”. Also Read - US: 7.5 Magnitude Earthquake Hits Off Alaska Coast Triggering Tsunami Warning

As per a report, the boy shot the victim at the back of her head while she was watching TV, using his grandfather’s handgun. When the grandfather rushed to look after his wife, the boy ran and shot himself. Also Read - Amid India-China Standoff, Army Buys High-Altitude Warfare Gears From US on 'Urgent Basis': Report

An investigation into the matter revealed that the boy hadn’t pre-planned to kill his grandmother or anybody.