A five-year-old boy died after falling from the 15th floor of an apartment building in Hanoi on Sunday.
According to police, the body of Bui Khac Long was found on the fifth floor of the Ha Thanh Plaza building.
After discovering the body, residents called an ambulance. The boy was dead when the vehicle arrived 20 minutes later.
According to Long's family, his father left to take an older son to school, leaving Long sleeping alone in the apartment at around 2:15 p.m.
Fifteen minutes later, the father returned home but he did not see Long.
He rushed outside and was informed of the boy's death.
Police said Long may have climbed out a window above his bed and fell out. The window did not have iron bars to protect the child, they said.
The case is being investigated further.