A teenager was still being questioned after a six-year-old boy was thrown five floors from the 10th floor of the Tate Modern art gallery in London.
The boy, who landed on the fifth floor roof, is in a critical condition following the fall on Sunday afternoon.
A witness said they heard a “loud bang”, before seeing a woman scream: “Where’s my son, where’s my son?”
A 17-year-old boy arrested on suspicion of attempted murder remains in police custody.
The Met Police said the six-year-old was thrown from a viewing platform.
We treated a person at the scene and took them to hospital as a priority,” a London Ambulance Service (LAS) spokesman said.
The boy was taken to hospital by air ambulance after he fell at about 14:45 BST.
A police spokesman said there was “nothing to suggest [the suspect] is known to the victim”.
The teenager had remained on the platform after the boy fell, police said.
Visitors were initially locked inside the gallery at Bankside on the South Bank.
‘Where’s my son?’
Admin worker Nancy Barnfield, 47, of Rochdale, was at the 10th floor viewing gallery with a friend and their children when her friend heard a “loud bang”.
Ms Barnfield said she turned around and saw a woman screaming: “Where’s my son, where’s my son?”
Members of the public quickly gathered around a man who was nearby, she said.
Ms Barnfield said: “We did not notice the mum before, we noticed her after because she was hysterical by then.” Read more