Jermaine Beckford completed a scintillating hat-trick to send Leicester through to the fourth round of the FA Cup in a comprehensive humbling of their east midlands rivals Nottingham Forest.
George Boateng set the tone for a dire night for the Reds, clipping into his own net following a goalmouth scramble, before Leicester took control of their own destiny through the mercurial Beckford.
The summer signing from Everton headed his first goal in 11 outings for the Foxes before sending a heatwave through the bitterly-cold King Power Stadium with two close-range finishes after the break.
Forest were not without their fair share of chances in the opening half, and Robbie Findley's poor miss with the goal gaping summed up a dreadful evening for Steve Cotterill's side.
The victory represents a morale-boosting second home win in six attempts for Nigel Pearson's side, but heaps further pressure on relegation-threatened Forest, who sit 22nd in the npower Championship.