Four people have been injured after stones were thrown at a bus in Dungiven, on Saturday.
A teenager was arrested over the attack which left a man and three women injured - one of the women was taken to hospital for treatment.
The bus was carrying spectators of the Apprentice Boys parade in Derry back to Belfast. Condemning the attack, North Belfast MLA Nelson McCausland said: “Several windows were broken and several people were injured with one woman being taken to hospital in Coleraine for treatment for cuts and the loss of teeth after she was hit in the face with a large stone.
“The people who carried out the attack must have known that hired buses passing through the village were bringing people home from the parade in Londonderry.
“This was a sectarian attack and should be treated as a hate crime.”
Deputy First Minister Martin McGuinness tweeted that the incident had been “shameful”.
This was a sectarian attack and should be treated as a hate crime.