China Tianjin blasts: Evacuations as sodium cyanide found

The Chinese authorities have ordered the evacuation of residents within a 3km radius of the Tianjin blast site over fears of chemical contamination.

The evacuations came as police confirmed the highly toxic chemical sodium cyanide was found near the site.

A man was found alive 50m from the blast core,Xinhua news agency said.

Eighty-five people are now known to have died and hundreds were hurt in the giant blasts in the north-eastern Chinese port on Wednesday.

People sheltering at a school used as a safe haven since the disaster have been asked to leave wearing masks and long trousers, reports say.