Man Utd drawn to face Tottenham in semis, Chelsea v Southampton
Morata with opener for Chelsea, Vardy equalises for Leicester
Sub Pedro heads winner in first half of extra-time
Hojbjerg & Cedric score as Southampton beat Wigan
Leicester 1-1 Chelsea
Danny Murphy
Former England midfielder on BBC One
It has been a good game in the second half. Leicester have had more tempo and have given it a real good go.
Leicester City 1-1 Chelsea
Pick up a box of chocolates and some garage flowers en route.
Jamie Vardy is apparently having a party.
Image source, Getty ImagesLeicester 1-1 Chelsea
Danny Murphy
Former England midfielder on BBC One
Riyad Mahrez does so well. You could argue the keeper could do a little more but Jamie Vardy is in the right place. He is in such good form at the moment and when you are, things like that go for you.
When Mahrez has anyone one-on-one he can beat them for skill.
Jamie Vardy
The 2015-16 connection is really starting to click back into gear.
Riyad Mahrez skins Marcos Alonso down the left for Leicester and sticks in a dangerous low cross.
One shot blocked from Jamie Vardy.
Another saved as Vicente Iborra follows in.
But the rebound is buried as Vardy gets to the loose ball before Willy Caballero.
Image source, Getty ImagesLeicester City 0-1 Chelsea
Things are starting to get stretched.
Chelsea are interested in doubling up with a second killer goal and Alvaro Morata sees a shot blocked on the edge of the area.
There are goals in these here hills.
Image source, Rex FeaturesLeicester 0-1 Chelsea
Danny Murphy
Former England midfielder on BBC One
When you have got Demarai Gray and Fousseni Diabate on the bench, that [substitution] does surprise me a little bit to be honest.
He's probably brought him [Shinji Okazaki] on for his energy and tenacity.
Leicester City 0-1 Chelsea
Right, Claude Puel needs a bit of urgency.
And no-one does urgency like Shinji Okazaki.
On comes the battery bunny striker in place of Kelechi Iheanacho.
Leicester City 0-1 Chelsea
Harry Maguire is an excellent like-for-like signing to be the long-term replacement for Robert Huth.
Tank-strong, obviously several yards quicker than the German and fits in perfectly next to Wes Morgan.
Vicente Iborra cracks a shot over the top from 20 yards for the Foxes.
Leicester 0-1 Chelsea
Danny Murphy
Former England midfielder on BBC One
N'golo Kante spots danger so well. He is always there. He has great movement, great awareness. It must be brilliant to play alongside. A super, super player.
#bbcfacup or 81111 on text
Johnny: Best way to deal with not being called up to the England squad? Be the best player on the pitch. I hope you’re watching, Gareth, because Mr. Albrighton clearly hasn’t got the message about not being good enough for your team.
Leicester 0-1 Chelsea
Phil Brown
Swindon Town manager on BBC Radio 5 live
They game is finely poised, you are never safe at 1-0.
Leicester have the potency up front, they just need a bit of quality from out wide, then you can expect them to get a foothold in this game.
Leicester City 0-1 Chelsea
Leicester are brewing up dangerously.
Marc Albrighton fizzes in a cross which Antonio Rudiger does well to head clear.
Then Riyad Mahrez with the old Ronaldinho flic-flac elastico special leaves Andreas Christensen's head spinning.
He can't find a team-mate with the square ball though.
Image source, PA
Phil McNulty
BBC Sport chief football writer at The King Power Stadium
Visible increase in urgency from Leicester City at the start of the second half and the home support are responding to it.
Chelsea defender Cesar Azpilicueta was raging at Victor Moses after he lost Jamie Vardy for that headed chance. Very lucky not to be punished with the equaliser.
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Ellis: Marc Albrighton is a very good player, overlooked by many but his crosses are consistent and works really hard. Maybe a shout for the plane to Russia?
Leicester City 0-1 Chelsea
A neat short corner routine from Leicester catches Chelsea napping with Riyad Mahrez slipping the ball to Marc Albrighton on the right-hand edge of the box.
Albrighton's snap shot is cleanly hit, but rises straight into the gloves of Willy Caballero.
Leicester 0-1 Chelsea
Phil Brown
Swindon Town manager on BBC Radio 5 live
I was going to say one of the disappointments for Leicester was how quiet Jamie Vardy has been in this game.
He had the chance to set the stadium alight there. Six yards from goal, none of the Chelsea defenders in sight and he gets it all wrong.
Leicester City 0-1 Chelsea
Oh dear.
Jamie Vardy with yards of space and hours of time as Wilfried Ndidi clips in a pinpoint cross and the Chelsea defence goes AWOL.
But the England striker gets the timing of his header all wrong, trying to bullet a header and only ballooning it over the bar.
Image source, ReutersLeicester City 0-1 Chelsea
Danny Murphy
Former England midfielder on BBC One
Marc Albrighton has started the second half well. I think he has been unlucky not to get an England call-up over the past couple of years. He can open up teams, cross both footed, does the defensive side well.
Leicester City 0-1 Chelsea
Marc Albrighton goes sliding in on Willian, leaving the Brazilian hobbling to the sidelines.
Nothing doing from the referee.
I think Willian is going to survive.
Yep, here he comes trotting back onto the field.
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Nii: Fabregas for Bakayoko. Thank you Conte for listening to us the fans.
Slim: Thank God he is off now. Scary movie over