Image copyright John Brennan Image caption One woman on the bus suffered serious facial injuries and had to be taken to hospital for treatment

Four people have been injured after stones were thrown at a bus in Dungiven, County Londonderry.

The bus was carrying spectators of the Apprentice Boys parade in Derry city centre back to Belfast on Saturday evening.

A man and three women suffered injuries in the attack. One of the women has been taken to hospital for treatment to serious facial injuries.

A 16-year-old youth has been arrested.

Deputy First Minister Martin McGuinness tweeted that the incident had been "shameful".