BBC News with Sue Montgomery

Opposition activists in Syria say 90 people have been killed by a government air strike as they were queuing at a bakery in a rebel-held town. Many others were reportedly wounded. The attack took place in the town of Halfaya in Hama province. Jim Muir is monitoring events from Beirut.

There were scenes of carnage and chaos at Halfaya. Several amateur videos posted on the internet showed horrendous images with mutilated bodies strewn in the street and lying in twisted piles in the rubble. Rescuers carried away the wounded on their backs, on motorcycles, on pick-up trucks or anything else capable of getting them away from the horror created when, according to activists and human rights groups, government jets struck a bread queue just outside a town bakery. Halfaya was one of several towns in the area captured in the past week or so by the rebels in a campaign to take control of the whole province and link up the territory they control.

The main opposition group in Egypt has called for an investigation into allegations of fraud in a referendum on a new draft constitution. The National Salvation Front says the vote was marred by irregularities, but they will not dispute the results of the poll. From Cairo, Bethany Bell reports.

The results of the referendum on the constitution aren’t official yet. But it looks like a comfortable victory for Egypt’s President Mohammed Morsi and his Muslim Brotherhood supporters. They say this charter will heal divisions and bring Egypt much needed stability. But opposition groups say the document has an Islamist agenda. They say the vote was marred by fraud and violations which they want investigated.