Emergency services are tackling a fire at a gas conversion garage in Darlington.
There are also reports of explosion at the building on Cleveland industrial estate in the Albert Hill area.
The air ambulance is taking one casualty to Newcastle's RVI.
He's believed to have arm and head injuries.
More top news
Hadrian’s Wall World Heritage Site is to host a major exhibition in 2017. It'll celebrate the cavalry regiments that once guarded the wall.
Scarlett Moffatt is crowned Queen of the Jungle in this year's I'm a Celebrity... Get Me Out Of Here! Here are her jungle highlights
Ken Loach's film I, Daniel Blake - set in Newcastle - has been celebrated at the British Independent Film Awards