Unverified footage shows fighting in Qusair
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Syria conflict: 'Very heavy bombardment' in Qusair

There has been an upsurge in fighting in the strategic Syrian town of Qusair, both sides in the conflict have reported.

The army, which began an offensive to recapture Qusair last Sunday, said it had launched a three-pronged attack on the rebel-held town.

The rebels said they were under heavy fire from Lebanese Hezbollah militants, who back Syria's government.

The BBC's Jim Muir said Qusair had suffered "very heavy bombardment".

This video contains unverified images purportedly filmed in Qusair.

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