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.

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.

Bob Vylan & Kneecap Glastonbury sets are being investigated by Avon Somerset police following Death to the IDF and Zionist chants.