![UN workers killed in Afghanistan](http://news.bbcimg.co.uk/media/images/51969000/jpg/_51969219_011668436-1.jpg)
At least eight foreign UN workers and four others have been killed in an attack on a UN compound in the Afghan city of Mazar-e Sharif, officials say. The violence happened during a protest over the burning of the Koran in a US church last month.
Witnesses said hundreds of people were protesting peacefully in the city when the scene suddenly turned violent. A local police spokesman told the BBC the city was now under control and a number of people had been arrested.