A video broadcast on a Palestinian television channel is said to show the American cousin of a 16-year-old boy who was murdered in a suspected revenge attack in Jerusalem, being beaten and dragged away by Israeli border police.
No charges have been brought against 15-year-old Tariq Khdeir, his lawyer said, but his detention has been extended until July 7, according to local media Ma'an news agency.
Warning: Video contains graphic images
More top news
The Olympic champion released a statement after a newspaper alleged his American coach may have broken anti-doping rules.
Storm Ewan gives a wet and windy end to the weekend across many northern and western areas.
The Home Secretary said the Government is "against cliff edges" and immigration figures will not suddenly fall when the UK leaves the EU.