At least 15 people have been killed and 130 injured in a fire at a hotel used by pilgrims in the Saudi holy city of Medina, state media report. The blaze started on Saturday afternoon, the authorities say, in the eastern part of the city. The victims' nationalities are unclear - about 700 people from different countries were staying at the hotel. The travellers were in Medina to perform the Umra, or minor, pilgrimage made by Muslims. The city is where the the Prophet Muhammad is buried and is Islam's second holiest city, after Mecca.