The Police have opened an investigation into the death of a 12-year-old girl in Al-Mavshniyah in west Qassim following her strangulation by a rope of a swing with which she was playing at the house of one of her relatives on Friday evening, said an online newspaper. Maj. Badar Al-Sahibani, spokesman of Qassim police, said that Al-Nabhaniah Police received information from a local hospital about the death of the child.