The Port of Tyne confirmed there is an on-going incident at the South Shields site.
No-one has been injured and there was no explosion.
There has been an incident, we're working with the fire brigade at the minute.
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White Rose flags and crowds half a dozen deep met the riders as they swept through the towns and villages of North Yorkshire.
The Black Cats boss has spoken to the media following his side's one nil defeat to Bournemouth which relegated them from the Premier League.
The Black Cats will play next season in the Championship after being relegated from the Premier League.