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Jack Harrison's goal was his first for Leeds since signing on loan from Manchester City

Jack Harrison's late goal earned Leeds a deserved point at Millwall and extended the Championship leaders' unbeaten league start.

Leeds came closest to scoring in a nervy first half, Ezgjan Alioski heading narrowly wide and Ben Amos saving well to deny Tyler Roberts.

Millwall took the lead when Jed Wallace fired in off the post after the visitors failed to clear a long throw.

Amos reacted brilliantly to keep out Luke Ayling's close-range strike, but he could do nothing to stop Harrison's effort from the edge of the box.

Tom Elliott almost won it for the Lions in added time, his header against the inside of the post deflecting safely away from the Leeds goal.

Millwall also had appeals for a penalty turned down by the referee as Elliott went down in the box, but neither side could complain with the final result.

Leeds had slightly the better of the first-half chances but lacked a cutting edge without injured strikers Patrick Bamford and Kemar Roofe.

Wallace's clinical finish looked to have earned his side a ninth win in 10 home games against Leeds, only for Harrison to respond with his side's first Championship goal at the Den since 2012.

The visitors remain top of the league as a result of Middlesbrough's defeat by Norwich, while Millwall are 19th.

Afterwards Leeds manager Marcelo Bielsa accepted responsibility for a touchline confrontation that occurred towards the end.

Bielsa confronted the home bench after they attempted to wind down the clock with their team 1-0 up and minutes away from winning until Harrison's equaliser.

"I take the responsibility for this situation because I am in football for longer than my colleague," Bielsa said. "I have to understand that circumstances that you have during the game, you don't have to take them as they are.

"If you win or you lose, it means a lot for us and sometimes you behave in a kind of way and just have to lament how we behaved."

Meanwhile, Millwall boss Neil Harris said: "We should have given the ball back quicker in our dugout but we don't because you had two minutes to go and we're 1-0 up at home and obviously they got excited when they scored a goal.

"But I've spoken to Marcelo downstairs and there are no problems whatsoever, it's fine."