"We deeply regret that such offensive and deplorable behaviour appeared on the BBC," the broadcaster said in a new statement

After punk duo Bob Vylan chanted "death to the IDF" live on air, the BBC has vowed to take action to "ensure proper accountability" for those found to be responsible for the broadcast.

The BBC had already said it should have cut the stream from Bob Vylan's performance at the music festival on Saturday which included on-stage chants of "death, death to the IDF", a reference to the Israel Defense Forces fighting a war in Gaza.