Neda Agha Soltani was killed in brutal and unprovoked attack
Mousavi planning a "general strike"
Secret meetings are said to have taken place in Qom and included a representative of Ayatollah Ali al-Sistani, the most prominent Shiite leader in Iraq.
Clerical leaders are also said to be considering forcing the resignation of President Mahmoud Ahmadinejad following over a week of unrest since he was elected in what senior opposition leaders claim was a fraudulent election.