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Officers made a 'frantic' bid to save Harlow victims

15 October 2012 Last updated at 13:15 BST

A fourth child has died following a house fire in Essex which police are treating as suspicious.

Fire crews were called to the property in Barn Mead, Harlow, at 01:45 BST.

Essex Chief Fire Officer David Johnson described the house fire as "incredibly intense" with temperatures inside reaching 1,000C and the flames taking hold "exceptionally quickly".