Police said they have now recovered 705 dead bodies from the ruins of Rana Plaza, the factory building where several thousand workers made cheap fashion garments for Western high street stores like Primark, Matalan, Bonmarche and Monsoon.

The incident is now the worst disaster in the history of the garment industry.

Survivors from Rana Plaza’s five factories on Tuesday blocked a nearby road in protest at the failure of their employers to pay their wages or compensation for the injuries they suffered when the illegal construction collapsed last month after the owners ignored warnings from engineers that serious cracks meant it could topple at any moment.

Dhaka’s five main building inspectors told The Daily Telegraph that Rana Plaza was one of an estimated 20,000 new buildings currently being illegally used without final consent.

Since 2008 all new buildings in the Bangladesh capital have been required to apply for a final “occupation certificate” following a visit by inspectors to check they have been constructed in accordance with their original plans and used for their stated purpose.

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