Downing Street's flags will be flown at half-mast in memory of the British victims of the Tunisian beach attack, according to the BBC.

Officials fear the UK death toll from Friday's gun attack is likely to be in the mid to high 20s, out of a total of 38 victims.

The home secretary says she has seen no evidence to indicate the beach was targeted because of the high number of British holidaymakers.

Speaking after she chaired a meeting of the government's emergency Cobra committee, Home Secretary Theresa May said Foreign Office staff were working round the clock in Tunisia and a 24-hour crisis center was up and running in the UK.

The home secretary suggested officials were having difficulty identifying the British victims as many were not carrying identification.