The US State Department has revoked the visas of members of Bob Vylan, a British rap punk group who led crowds to chant “death” against Israel’s military at a UK music festival this past weekend.

During the Glastonbury performance, which is aired annually on BBC, one of the group’s members, Bobby Vylan, led the crowd to chant, “Death to the IDF,” referring to the Israel Defense Forces, to the shock of organizers and onlookers.

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.