Iran: fears grow of security crackdown in Zahedan as anti-regime protests persist

Checkpoints have sprung up and armed police flood the streets in the restive city where dozens of civilians were killed last year

Protesters say they fear Iran's security services may be planning an assault in the city of Zahedan - the site of a deadly attack on civilians last year - as reports emerge that there are thousands of armed police on the streets.

Fifteen checkpoints have been put up in the past week across the city, the capital of Sistan-Baluchistan province, and several people have been detained by security forces.