UPDATE: (CROSSVILLE) The 7-year-old boy accidentally shot in the head Monday by one of his siblings has died, according to Crossville police. 
 
 The outlook for the unidentified child had been serious from the start, according to authorities. 
 
 Police confirmed his death about 8:45 p.m. Monday. He was taken to a Knoxville area hospital. 
 
 A University of Tennessee Medical Center spokeswoman said she could not confirm if the child had been taken there. 
 
 The shooting happened Monday afternoon as four children sat in a vehicle outside a Verizon store in Crossville. 
 
 The mother and stepfather had gone inside to pay a bill. One of the children found a loaded gun in the mother's purse. 
 
 Police said the child tried to unload the gun. The weapon went off and hit the boy in the head. 
 
 The Cumberland County District Attorney General"s Office and the Department of Children’s Services were investigating. 
 
 A Verizon spokesperson declined to comment. 
 
 PREVIOUS STORY: A 7-year-old boy was accidentally shot in the head by one of his siblings after their parents left them unattended in a car Monday afternoon, according to the Crossville Police Department. 
 
 According to a news release, four children had been left in a vehicle while their mother and step-father went inside a business to pay a bill. 
 
 During that time, investigators discovered that one of the children found a loaded semi-automatic pistol inside their mother's purse. When the child tried to remove the magazine, the firearm discharged and struck the 7-year-old male victim. 
 
 Emergency responders arrived and found the victim was bleeding from the head. 
 
 The victim was flown to a Knoxville area trauma hospital for treatment. 
 
 The Cumberland County District Attorney General's Office and the Department of Children's Services have been notified and are involved in the investigation. 
 
 Crossville Police described the incident as a "tragic accidental shooting." ||||| SHARE 
 
 By News Sentinel Staff 
 
 A 7-year-old boy was flown to a Knoxville hospital Monday after being shot in the head by another child in what Crossville, Tenn. authorities say appears to have been an accident. 
 
 The shooting was reported shortly before 3 p.m. when four children were left unattended in a car while their mother and stepfather were paying a bill at a business on U.S. Highway 127 North, according to the Crossville Police Department. 
 
 One of the children found a semi-automatic pistol in the mother's purse, which was left in the vehicle. When the child apparently tried to remove the magazine from the gun, it fired, striking the boy, police said. 
 
 The family was visiting Crossville from White County. The ages of the other children were not released. 
 
 The boy, whose name was not released, was flown by helicopter to the University of Tennessee Medical Center. His condition was not immediately available. 
 
 The Cumberland County District Attorney General's Office and the Tennessee Department of Children's Services are involved in the investigation. 
 
 More details as they develop online and in Tuesday's News Sentinel.
– A 7-year-old boy is dead after being shot in the head by a sibling when their parents left them alone in the car Monday afternoon in Tennessee, WBIR reports. According to NBC News, four children were waiting in the car outside a Verizon store while their mother and stepfather paid a cellphone bill when one found a loaded handgun in their mother's purse. Police say the child was attempting to unload the gun when it went off in a "tragic accidental shooting." The bullet struck the 7-year-old in the head, and he died hours later at the hospital, WBIR reports. According to the Knoxville News Sentinel, authorities are not releasing the ages of the other children in the car or any of their names. The Department of Children's Services is investigating the incident, WBIR reports.