Victor Wanyama's first goal for Celtic secured a 1-0 win over Hearts that took the Hoops back to within four points of Clydesdale Bank Premier League leaders Rangers.
Anthony Stokes hit the bar with a header after the break before Wanyama broke the deadlock in the 72nd minute with a drive from the edge of the box.
Two minutes from time, though, Wanyama conceded a penalty when he handled in the box but Fraser Forster dramatically saved Eggert Jonsson's spot-kick.
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