Boy, 11, is shot dead by 9-year-old after he found handgun in car when they were left alone in Walmart parking lot while woman, 32, went shopping

Police say an 11-year-old boy was fatally shot by a 9-year-old in a Dallas Walmart Neighborhood Market parking lot after they were left alone in a car
According to police, a 32-year-old woman left the two boys alone in a parked car as she went shopping on Sunday afternoon
Police say the 9-year-old boy found a handgun in the car and shot the 11-year-old
The unidentified 11-year-old was taken to a local hospital with a gunshot wound where he was pronounced dead