SURAKARTA, Indonesia– Jamaah Ansharut Tauhid (JAT) Surakarta leader Mohammad Sholeh Ibrahim admitted its members beat a fan of rock band Slank on Sunday (June 15th), local media reported.

About 150 members of the hardline Islamic group were marching to mark the coming of Ramadan in late June when they encountered a group listening to a street performance, The Jakarta Post reported.

The JAT members accused people in the crowd of consuming alcohol and allegedly spat on one man, then beat another, the Post said.

Sholeh admitted group members committed the assault and said he'd instructed them not to use violence before they took to the streets.