BBC: Around 180 Sufi Muslims have been arrested in Iran after attacking a Shia mosque where a cleric labelled their religion "illegitimate", say reports.
The confrontation in the western city of Boroujerd led to a shootout between the Sufis and police that reportedly left about 80 people injured.
Sufis are tolerated in the Islamic Republic though some religious leaders have branded them "a danger to Islam". Iran police battle Sufi Muslims (more)
Mark Alexander
