Home alone, 8-year-old fatally shoots little sister, 5, injures brother, 4 By HANNAH PARRY FOR DAILYMAIL.COM An eight-year-old boy left home alone with his younger siblings accidentally shot his sister, 5, dead and injured his four-year-old brother. Serenity Allen, died at the scene from the gunshot wound shortly after 1pm on Saturday in their inner city family apartment in Jacksonville, Florida, according to Jacksonville.com. Jacksonville Sheriff’s Office Chief Chris Butler said the elder boy fired a single shot from the gun, which killed his younger sister and gave his brother a non-life-threatening wound. ‘We believe, in the absence of any other information being developed, that unfortunately this is a tragic unfortunate accidental shooting,’ Butler said. The children’s mother had left for an unspecified amount of time to go to a store, Butler said. Police did not release the names of the family involved. The four-year-old is being treated at the hospital where he is expected to make a full recovery. A therapist was brought in to help the boy who fired the shot, Butler said. The Florida Department of Children and Families and the state attorney’s office were also being consulted. It was unclear to investigators how the child got access to the gun, or whether it had been properly stored and secured. Butler said the incident is under investigation to see if any charges will be filed for leaving a gun accessible to the children. Outside the apartment block, devastated family and friends gathered to mourn. One woman collapsed to the ground crying, while others screamed in pain and anguish. Butler said the tragedy was hard to witness. ‘You could just tell from their expressions, their eyes and everything. It’s not very pleasant to go through this investigation at all. It’s tragic,’ he said.