A late goal by Iheanacho keeps the Celtic title dream alive as Hearts slip up in Lothian and the gap to just three points.

Celtic with an early chance as Daizen Maeda flashed a ball across the box but no on there to take it as a big chance goes missing for the visitors.

Martin O’Neil’s men were ahead after 8 minutes as Tierney whipped a low cross into the box with McCracken dealing with the initial chance but eventually landed at Yang who made no mistake as he scoops the ball in.

Following sloppy play by the hosts, Cvancara tried his luck from distance but fired well over to deny a second.

Celtic on 21 minutes had another huge chance as Nygren fired a ball across the goal-mouth but Yang unable to tap it in after stretching fully but unable to connect.

Maeda soon after had a darting run goal bound but his strike from distance was stopped by the leg of the Dundee number one after Nygren playing a great ball.

A mistake by Dundee allowed Cvancara through on goal with a darting run towards McCracken where the striker struck the ball but only finding the post in a chance he really had to score.

Celtic continued to cause issues as Nygren picked up the ball on the edge of the box, slotted to Cvancara but was a simple stop for the Dundee man in goal.

Moments later, youngster Colby Donovan unleashed one from distance but just a bit too high to cause any real problems.

A poor first 45 by the hosts as they struggled to test Sinisalo at all where Celtic have looked miles better than the hosts as they go into the break ahead and well deserved.

Into the second period, Celtic should have had two as Nygren squared the ball to Cvancara who took an extra touch which killed off any chance of getting the second of the afternoon.

10 minutes into the second half, Dundee were awarded a spot kick following handball with captain Simon Murray dispatched striking it into the bottom left-hand corner to put Dundee back on level terms.

Celtic had a chance after the hour mark, Tierney on the left-flank who whipped the ball in which Yang’s header was tipped over by McCracken.

Celtic were ahead late on after substitute Saracchi crossed the ball in as Iheanacho connected well and struck the ball into the back of the net from close range.

Dundee were moments later reduced to ten as Astley was shown red following a last man challenge as it went all wrong for the Dees.

Iheanacho almost had the third but a brilliant block by the substitute Koumetio denied their third.

A big win on the road for Celtic as they tighten the gap at the top to just three points as the title race heats up for the final six games.

Dundee: McCracken(6), Wright (6), Astley (6), Halliday (6), Graham (8), Congreve (7), Yogane (7), Dhanda (6), Hamilton (6), Robertson (7), Murray (7).

Substitutes: Hay (6), Cotterill (6), Wright (6), Koumetio (6), Reilly (6).

Celtic: Sinisalo (6), Scales (6), Donovan (6), Tierney (6), Trusty (6), McGregor (6), Yang (7), Maeda (6), Nygren (7), Oxlade-Chamberlain (7), Cvancara (6).

Substitutes: Iheanacho (7), Ralston (6), McCowan (6), Saracchi (6), Forrest (6).