California (U.S.) April 11 (ANI): An eight-year-old student and a teacher became the victim of shooting after a gunman opened fire while walking into a classroom at North Park Elementary School in San Bernardino, California, USA on Monday morning. The shooter shot dead a teacher, who was later confirmed as his estranged wife, and injured two students in the process. One of the injured students died in hospital, while the other is said to still be in a critical condition. The gunman committed suicide after shooting. According to police investigations, the gunman has been identified as Cedric Anderson, and the adult victim has been named as Karen Elaine Smith. Reportedly, it is believed that the violent murder was caused by a domestic dispute between the estranged couple. The school will be closed for two days for further investigations.