'Heavy shelling' on protesters in Yemen

There has been more violence in Yemen as fighting continues between opponents and supporters of President Saleh.

There are reports of heavy shelling and gunfire in the capital Sanaa and two people are thought to have been killed in a rocket attack on an anti-government protest camp.

These are some of the worst clashes since the beginning of demonstrations against the government at start of the year.

Daniel Griffiths reports.