Between five and 15 people are thought to have been killed by a huge explosion at a fertiliser plant near Waco in the US state of Texas.

More than 160 people were injured as dozens of homes and buildings were destroyed in the evening blast.

Emergency services are still going from home to home, in the darkness, trying to rescue any survivors.

A number of firefighters were tackling a blaze at the scene when the explosion happened, and are still missing.

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