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The UK Independence Party says it has expelled one of its councillors "for bringing the party into disrepute".

Rozanne Duncan is understood to have used highly racially offensive language during filming for a BBC documentary to be broadcast in February.

The party did not give the reasons for Ms Duncan's expulsion but said she had 28 days to appeal.

She sits on Thanet District Council in Kent, where she was UKIP group deputy leader.

Ms Duncan won the council seat, in the Cliftonville East ward, in a by-election in May 2013.

She had previously stood as a Conservative candidate.