Match ends, Celtic 1, Ross County 1.
Celtic stretched their lead at the top of the Premiership to nine points despite a dreary performance against Ross County at a subdued Parkhead.
Leigh Griffiths' 38th goal of the season put the champions ahead.
But Stewart Murdoch's 64th-minute strike from the edge of the box gave Jim McIntyre's team a deserved point.
Sections of the home support unveiled anti-board banners before kick-off and the mood inside the stadium at the end was one of frustration and anger.
There was a brief flurry of boos on the full-time whistle, despite Celtic moving to within four points - three should be sufficient, given their vastly superior goal difference over Aberdeen - of securing a fifth league title in a row.
But there was no sign of a club on the cusp of a party on Sunday. County were the ones who left with smiles. They were alone in that.
'Desperately lacking in atmosphere and edge'
Griffiths scored midway through the opening half when County backed off him in the penalty area, almost inviting him to have a smack at goal. The striker took them up on their offer and promptly rifled his shot high past Scott Fox in the visitors' goal.
It was a rare moment of quality on a day that was low-key and desperately lacking in atmosphere, edge and decent football.
Patrick Roberts almost teed-up Tom Rogic for a second Celtic goal just before the half-hour, but the Australian blew his moment. Then it was County's turn to waste a chance - and a what a good one it was.
Liam Boyce had a prolific first half of the season but has had a barren second half, with only one goal since the turn of the year.
He had a great opportunity to double the 2016 total just before the break but he headed straight at Craig Gordon when anything to the left or right of the goalkeeper would surely have seen him score.
Having spurned one good chance, County then failed to make the most of another shortly after the restart, Michael Gardyne volleying over from close-range.
Celtic had a few moments after that. A Griffiths free-kick, a Griffiths shot, a chance for Roberts. There was never really a sense that they had killed County off, though.
Alex Schalk gave them a fright when he went one-on-one with the exposed Charlie Mulgrew and fired just over. The equaliser came soon enough, Murdoch thumping his shot into the same corner of the net that Griffiths had found earlier in the game.
It was a deserved goal for County, an illustration of their mental strength and yet another indication of Celtic's awful vulnerability.
Further examples came in a flow. Nir Bitton earned hollers of scorn when scooping miles over from decent range, then Colin Kazim-Richards missed a glorious chance. The Turkish international has scored one goal in more than seven hours for Celtic - against East Kilbride.
County went close themselves when Schalk thundered in a shot that flew just past Gordon's post.
It ended in stalemate. A great point for the visitors. Another poor day for Celtic.
- 23LustigBooked at 87mins
- 21MulgrewSubstituted forAmbroseat 90'minutes
- 18RogicSubstituted forMcGregorat 65'minutes
- 13Kazim-RichardsSubstituted forCommonsat 81'minutes
- 17FranksSubstituted forDe Vitaat 79'minutesBooked at 86mins
- 18MurdochBooked at 68mins
- 23SchalkSubstituted forGrahamat 90+2'minutes
- 10BoyceSubstituted forGoodwillieat 60'minutes
- 24De Vita
- Don Robertson
- Shots on Target
Second Half ends, Celtic 1, Ross County 1.
Attempt blocked. Kris Commons (Celtic) left footed shot from outside the box is blocked.
Attempt missed. Leigh Griffiths (Celtic) header from the centre of the box misses to the left.
Substitution, Ross County. Brian Graham replaces Alex Schalk.
Attempt blocked. Leigh Griffiths (Celtic) right footed shot from the right side of the box is blocked.
Substitution, Celtic. Efe Ambrose replaces Charlie Mulgrew because of an injury.
Mikael Lustig (Celtic) is shown the yellow card for a bad foul.
Foul by Mikael Lustig (Celtic).
Alex Schalk (Ross County) wins a free kick on the right wing.
Raffaele De Vita (Ross County) is shown the yellow card for a bad foul.
Nir Bitton (Celtic) wins a free kick in the defensive half.
Foul by Raffaele De Vita (Ross County).
Attempt saved. Callum McGregor (Celtic) left footed shot from outside the box is saved in the bottom left corner.
Hand ball by Raffaele De Vita (Ross County).
Scott Brown (Celtic) wins a free kick on the left wing.
Foul by David Goodwillie (Ross County).
Substitution, Celtic. Kris Commons replaces Colin Kazim-Richards.
Corner, Ross County. Conceded by Mikael Lustig.
Foul by Scott Brown (Celtic).