At least five people died and 11 others were injured after a lorry carrying fireworks for the Chinese New Year celebrations exploded on a highway bridge outside the city of Sanmenxia in eastern Chin, local government said.
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The Duchess of Cambridge has been on maternity leave since the week before Easter.
The Duke and Duchess of Cambrige have been together for 15 years and will have three children under the age of four.
News of William and Kate’s third child was announced on September 4 and the duchess went on maternity leave on March 22.