Hundreds of people have turned out for X Factor auditions at the Sage Gateshead.
Earlier this year, it was confirmed that Simon Cowell was returning to the ITV programme.
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The pair defrauded Durham County Council out of nearly £100,000 but were given suspended sentences.
Gascoigne is alleged to have sent abusive tweets, text messages and telephone calls to Amanda Thomas in March this year.
The Black Cats are attempting to find their seventh permanent boss since the Irishman's departure.