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Activist on 'cruel and aggressive' crackdown in Yemen

20 September 2011 Last updated at 15:51 BST

At least six people have died in a third day of violence in the Yemeni capital, Sanaa, where tens of thousands of anti-government protesters are occupying a square.

Two demonstrators were reportedly killed by mortar shells.

Anti-government activist Ahmed Al-Shawish called the recent action against demonstrators in Sanaa ''cruel and aggressive''.