By Rick Gladstone and Artin Afkhami, New York Times, Jan. 25/26, 2012

The judicial authorities in Iran have arrested at least half a dozen journalists and bloggers over the past few weeks, according to their acquaintances, opposition Web sites and rights groups. The moves appear to be part of a pre-emptive campaign of intimidation to thwart protests surrounding the parliamentary elections that are scheduled to be held in early March.

The arrests of the journalists and bloggers, including two prominent women whose blog posts are widely read in Iran, have not been reported by the official news media. Rights groups and people who know the detained journalists said the government apparently wanted word of the arrests to spread informally, to heighten the atmosphere of fear and paranoia.

It also was unclear what specific charges, if any, had been lodged against those who were arrested. None seem to have been politically active or to have published anything that might be considered seditious since the last major Iranian government crackdown on free expression in February 2011 [....]

Also see:

Green Voice of Freedom for  3 arrests in less than 24 hours; Security forces step up arrest of journalists, activists, and
Journalist, blogger Parastoo Dokouhaki detained, both posted 1/18/12