LONDON, Ramadan 13, 1436, June 30, 2015, SPA -- The number of Britons confirmed killed by a gunman in Tunisia last Friday has risen to 21 from 18, a spokeswoman for British Prime Minister David Cameron said on Tuesday, according to Reuters. The spokeswoman said the government was trying to confirm the identities of a further nine people killed in the attacks who it thought were British nationals. --SPA 15:54 LOCAL TIME 12:54 GMT www.spa.gov.sa/w