NAJAF, Iraq - Cleric Moqtada al-Sadr, head of a powerful Shi'ite movement in Iraq, on Sunday called for more political reforms and said he would back a no-confidence vote against the prime minister if these were not made.

Sadr, a Shi'ite cleric who led uprisings against the US presence before American forces withdrew last December, is now an influential player in government after his bloc's support of Iraqi Prime Minister Nuri al-Maliki helped secure his position.

"Our main demand and the last demand is reforms," Sadr told journalists during a rare news conference at his home in Najaf, southern Iraq.

"I said and I am still saying that there is a promise from me to the other blocs if the votes (for a no-confidence motion) reach 124, my 40 votes are with them."

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