Disturbing CCTV footage allegedly shows a 10-year-old girl beating a baby in a Chinese tower block lift, before she threw him off the 25th floor.
The horrific attack is said to have happened in the huge city of Chongqing, China.
A woman only identified as Mrs Wu was taking her one-year-old grandson Yuanyuan, out to play using the elevator in her building.
In the distressing footage, Mrs Wu is seen in the lift with the baby boy and a child’s tricycle.
The girl, who has not been named, slips into the lift as it reaches the ground floor.
Mrs Wu is seen leaving the lift with the trike, but before she can return for her grandson, the girl lifts him up and holds him up in front of the grandmother as the doors close between them.
During the lift’s journey to the 25th floor of the tower block, the girl - dressed in a school uniform - is seen throwing the baby to the floor, kicking, punching and stamping on him.
When the lift doors finally open, she throws him to the floor outside the lift.
According to local TV news, Mrs Wu rushed to the 25th floor, where she ran into the girl - but without her grandson.
The girl is reported to have told Mrs Wu someone else took the baby, and started to search the apartment with her.
A security guard found baby Yuanyuan in a pool of blood outside the building after apparently being thrown from the balcony .
He awoke from a coma on December 3rd, but remains in critical condition with a broken skull and internal bleeding.
The family, who had only recently moved into the tower block, said they did not know the girl, and had no idea what could have led her to attack Yuanyuan.
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