Celtic's Clydesdale Bank Premier League hopes suffered a blow when Danny Galbraith's stoppage-time winner gave Hibernian all three points in a dramatic match at Parkhead.
Celtic 1 - 2 Hibernian
Marc-Antoine Fortune headed Celtic in to a fifth-minute lead from a Paul Caddis corner and the home side appeared to be cruising.
However, in the 26th minute, Anthony Stokes found room inside the Hoops' box to flick a header from Derek Riordan's corner past Artur Boruc.
Celtic regained the initiative after the break but in the first minute of two added minutes, Galbraith, on for Colin Nish after the interval, fired in a dramatic breakaway winner after being set up by John Rankin.
There was a hint of offside about the goal but the Hoops fans were just as angry at finding themselves 10 points behind Rangers albeit with a game in hand.
With only one regular defender in Celtic's back four, right-back Andreas Hinkel, there appeared the opportunity for the Leith side to take advantage.
But before Hibs had a chance to test that theory, they found themselves behind.
In the fifth minute, after Celtic midfielder Aiden McGeady won a corner on the left, Fortune headed the home side into the lead.
When Caddis' whipped-in cross came over, the Hoops striker, who notched a double at St Johnstone, reacted first at the front post to head past Hibs goalkeeper Graeme Smith and in off the crossbar.
In the 26th minute, after Boruc had pulled off a fine save to prevent Thompson scoring an own goal with a header, Hibs drew level from the resultant corner.
Riordan crossed from the left and Stoke nipped in ahead of Boruc to flick his header into the net.
In the final minute of the half, though, after Hibs skipper Chris Hogg had fouled Caddis 30 yards out, the ball ended up in the net from Marc Crosas' free-kick but referee Iain Brines ruled it out for an infringement.
Second half
Within a minute of the second half starting, McGeady ran onto a Fortune pass but screwed his shot just wide of the target.
Then, as the home side increased the pressure, Samaras missed his kick altogether in front of goal from Niall McGinn's volley back into the danger area before Smith made a good save from McGeady's curling effort from the edge of the box.
In the 82nd minute, as Hibs broke, midfielder Liam Miller appeared to be pushed to the ground by O'Dea inside the Celtic box but referee Brines ignored penalty claims.
As tension grew inside Celtic Park, Hogg sliced his shot wide of the target from Galbraith's corner.
But in a sensational finale, with seconds remaining, Hibs broke and Galbraith slotted past Boruc for the winner.
© Press Association