 Elsewhere, four people have been killed and several wounded in a shooting near a mosque in Oman. People have been gathering for prayers to mark Ashura, one of the most important religious ceremonies for Shia Muslims. Sebastian Usher has more. The Shia make up a very small part of the Omani population, about 5%. We also have heard from the Pakistani embassy that there were Pakistanis among the wounded. I'm Jonathan Fruin at the BBC in London.