Celtic have suffered just their second Scottish Premiership defeat of the season in losing 2-1 at Hibs.
The leaders had an equaliser controversially ruled out after a V-A-R review.
Franny Kiernan reports
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Rangers also lost.
They were beaten 2-nil by St Mirren at Ibrox.
Aberdeen got a third successive victory as they beat Kilmarnock 1-nil.
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Dundee United won 1-nil at home to Motherwell, with Ross County beating Dundee 3-1.