Members of Iranian thrash band Confess have been jailed for playing metal music and could face execution on charges of blasphemy, according to Metal Nation News.

Nikan Siyanor Khosravi and Khosravi Arash Chemical Ilkhani, two members of the band, were jailed in November and held in solitary confinement until Feb. 5 when they were released on bail.

Making or listening to metal, rock, rap and some pop music is reportedly banned in Iran and has been linked to Satanism, according to the BBC.

Khosravi and Ilkhani could face between six months and six years in prison and if found guilty of blasphemy they could be executed.

The full list of charges brought against against the group include blasphemy; advertising against the system; forming and running an illegal band and record label “in the satanic metal & rock music style”; writing anti-religious, atheist, political and anarchistic lyrics; and conducting interviews with “forbidden” foreign radio stations.