British police charged a 17-year-old with attempted murder after a six-year-old boy was thrown from a 10th floor viewing platform at the Tate Modern art gallery in central London.

The 17-year-old male was arrested on Sunday shortly after the child was found on a fifth floor roof after reportedly being thrown from the viewing platform.

His mother was heard by witnesses screaming “Where’s my son, where’s my son?.”

“The injured boy remains in a stable, but critical condition in hospital with his family, who continue to be supported by officers,” police said.

The incident led to a lockdown of the museum and visitors were turned away while the building was evacuated.

The Tate Modern, situated in a former power station next to the River Thames, was the most popular attraction in Britain in 2018 with almost six million visitors, according to the Association of Leading Visitor Attractions.