Members of the British rap punk duo Bob Vylan had their visas revoked by the United States and are under investigation by local police after leading a crowd to chant “death” to Israel’s military at a UK music festival this past weekend.

British police launched a criminal investigation Monday into a televised performance at the Glastonbury Festival by rap punk duo Bob Vylan, who drew intense criticism after they led crowds of music fans in chanting “death” to the Israeli military.

The U.S. State Department said that it has revoked visas to the Bob Vylan duo for leading a chant of “death” to the Israeli Defense Forces at a music festival in the United Kingdom last weekend.