The celebrated author Dr Bill Bryson OBE has been in the region as Durham University honoured him as part of a naming ceremony. The author officially renamed the University's library.
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Hundreds have left the Civic Centre in Sunderland as this year's Sunderland Pride gets underway.
It happened after yesterday's football game, which saw Barrow win 2-0 against York City.
All of the fires were extinguished but police are appealing for information. They believe they may have been started 'maliciously'.