Nigel Worthington's tenure as temporary boss of Leicester got off to a disastrous start with a defeat against his old club, which leaves the Foxes perilously close to the relegation trapdoor.
But it could all have been very different. Leicester had exploded out of the starting blocks taking just 40 seconds to score.
Matt Fryatt lost control of a Shaun Newton through-ball while attempting to turn a defender, but Darren Kenton was able to rush in and drill home from a tight angle.
Norwich's first shot came on seven minutes when Chris Martin scuffed a 16-yard shot wide.
The visitors continued to rally going close 18 minutes when Conrad Logan had to be at full-stretch to keep out Lee Croft's well placed long-range drive.
Leicester had a clear opportunity to double their lead midway through the first half when Iain Hume seized on a stumble by Dion Dublin, but then failed to hit the target when he fired into the side netting from a tight angle.
The Canaries continued to menace however with Darren Huckerby breaking free and placing a looping shot just over.
The lively Hume then latched on to Jason Jarrett's long pass before crashing a shot over the angle of post and bar.
On the stroke of half-time, Jarrett burst through only to be denied by Jason Shackell's brave challenge.
City's best chance after the restart came early on when Fryatt's close-range effort was brilliantly saved by Tony Warner, after Richard Stearman had driven a low ball to the far post.
That was the best it got for the home side who faded as the game wore on.
The Canaries levelled when awarded a 74th minute penalty after Patrick Kisnorbo had handled Huckerby's shot inside the six-yard box, with Robert Earnshaw keeping his cool to score low to his left with the keeper going the wrong way.
And it got a whole lot worse for Leicester 12 minutes from the end when Huckerby floated over a corner and the unfortunate Gareth McAuley put through his own net.
In the dying moments Warner kept his side's lead intact when he parried Nils-Eric Johansson's close-range header.