UPDATE: Iran: Campaign to free Khadijeh Moghaddam
Bail for Mrs Moghaddam, 56, was set at more than $100,000 (63,000 euros).
Women targeted
Human rights groups say Mrs Moghaddam was arrested at her home on Tuesday. Earlier this week Amnesty International said it believed she was being held solely on account of her peaceful activities in support of equal rights for Iranian women. Among those calling for her release are prominent writers, journalists, lawyers and reformist politicians.
The letter's signatories also include Parvin Ardalan, a founder of the One Million Signatures campaign, who last month was prevented by the Iranian authorities from leaving the country to collect a prestigious human rights prize abroad.
A number of international human rights groups have accused the Iranian authorities of targeting women's rights activists in Iran as part of a wider crackdown on dissenting voices. They say a number of activists from the One Million Signatures campaign are among those who have been arrested.
By: Pam O'Toole
12 April 2008
BBC News