Goals from Joe Willock, Allan Saint-Maximin, and a brace from Callum Wilson were enough to give the Magpies a commanding lead, and a late fightback from the hosts wasn’t enough to prevent Steve Bruce’s men from securing an impressive three points.
The result allowed Newcastle to climb up to 14th in the table with three games remaining.
Speaking after the game Foxes boss Brendan Rodgers was quick to pinpoint where his side went wrong.
He said: “It’s an easy game to analyse.
“We just made poor errors. And give credit to Newcastle, because they’ve got strong players in the front areas of the pitch, and if you make mistakes, they will punish you.”
"It’s difficult to play in a back five or a back four without Jonny Evans.
“The first goal was poor from a concentration perspective. Third goal is a mistake. The fourth goal is too easy for Wilson to get in. It’s not really about systems.
“I give credit to the players, they kept going. Some teams will sink at 4-0 down, but they kept running and kept fighting. We could have four or five ourselves, but if you defend like that, you are going to struggle to win games.”
Defeat against the Toon Army on Friday night has put a considerable dent in Leicester’s hope of qualifying for the Champions League next season.
We’ve gathered the best of today’s Premier League transfer speculation involving Newcastle United and their top flight rivals below...

5. Rangers enquire after Murphy
Rangers have enquired about the availability of Newcastle United winger Jacob Murphy this summer. (Chronicle) (Photo by Michael Regan/Getty Images) Photo: Michael Regan

6. Clarets in for Souttar
Burnley are the latest Premier League side to show an interest in Stoke City star Harry Souttar. West Ham, Crystal Palace, and Wolves are also keen. (LancsLive) (Photo by Gareth Copley/Getty Images) Photo: Gareth Copley

7. Leeds keen on Gallagher
Leeds United are in the hunt for Chelsea midfielder Conor Gallagher in a summer loan. However, it seems that he wants to stay at Stamford Bridge and fight for his place at Stamford Bridge next season. (The Sun) (Photo by Shaun Botterill/Getty Images) Photo: Shaun Botterill

8. Gunners favourites to land Saint-Maximin
Arsenal have emerged as favourites to sign Newcastle United winger Allan Saint-Maximin this summer. (SkyBet) (Photo by Stu Forster/Getty Images) Photo: Stu Forster

