Rap duo Bob Vylan is under fire for voicing 'antisemitic sentiments' at the U.K.'s Glastonbury Festival, after leading the crowd in chants of 'free, free Palestine' and 'death, death to the IDF.'

Deputy Secretary of State Christopher Landau confirmed the duo's visas have been revoked "in light of their hateful tirade at Glastonbury, including leading the crowd in death chants."

British police said Monday that they have launched a criminal investigation into the rap-punk duo Bob Vylan’s weekend performance at the Glastonbury Music Festival over its vocalist’s chants against the Israeli army. Police said they made the decision after reviewing video footage and audio of the performance.