James Justin scored on his return to Luton Town as the Hatters were beaten 4-0 by Leicester City in the third round of the Carabao Cup on Tuesday night at Kenilworth Road.

Demarai Gray opened the scoring for the visitors, converting cooly into James Shea's bottom-right corner following a clever corner from Marc Albrighton, before Justin's smart run was found by Youri Tieleman's, allowing the summer signing to finish first-time at his old home.

Ten minutes from time, Tieleman's made it 3-0, meeting substitute Kelechi Iheanacho's cross with the Foxes continuing to dominate proceedings.

The Nigerian substitute made it four seven minutes later to confirm it was Brendan Rodgers' side that progressed to the fourth round of the cup.

The two sides came into this clash off the back of contrasting weekend results; Leicester beating Tottenham Hotspur 2-1 whilst Luton were emphatically beaten by Hull City.

Luton were not intimidated by their top-flight opponents, putting pressure on an ageing backline from the off, although eventually quality told. On the 34th minute, Albrighton played a clever corner to Gray who had made a dart into the Hatters' box.

The England under-21 international didn't need a second touch, sweeping the ball past Shea's despairing dive to give Brendan Rodgers' side the lead.

Then it was the turn of the Foxes' debutant.

Darting cleverly inside left-back Dan Potts, Justin was found well brilliantly by Tielemans. The right-back did not need to take another touch, cooly sidefooting a shot past his former teammate Shea.

It was a moment the home crowd will not have wanted to see, but with Justin refusing to celebrate against his former side, they erupted into applause for their former star, even dusting off his old chant.

The second half started as the first ended, with Leicester penning their opponents into their own half, intent on killing the tie off as soon as possible.

Gray and Albrighton continued to threaten on either side with the classy Tielemans beginning to dictate play with greater and greater ease, with Wes Morgan even feeling the urge to venture forward.

The Foxes captain played a neat one-two on the edge of the area before bursting through, only to shoot straight at Shea.

Izzy Brown and Harry Cornick emerged from the dug-out with the hope of changing the course of things on the hour mark but, barring one shot from the former when faced with a chance, it did little to alter things.

Ten minutes from time Tielemans made the result safe. Some more great work from James Justin released Iheanacho who stumbled, but crucially retained possession.

He eventually got his head up and found the midfielder's run into the area with the Belgian squeezing a sidefooted shot past Shea.

It was a result that Luton fans will have found hard to argue with given their visitor's dominance and they even notched a fourth before the final whistle.

Albrighton pounced on a loose ball before feeding the ball into Iheanacho who cockily chipped the goalkeeper and found the net too, via a slight touch from Shea, adding some gloss to a professional performance.

For Luton, it makes it seven goals conceded in two matches with attention swiftly turning to the weekend.