Barnet are through to the next round of the League Cup thanks to an extra-time win over Millwall.

The League Two side took a early lead as John Akinde converted a penalty in the 11th minute after he was fouled in the box by Byron Webster.

The Millwall midfielder almost atoned for his error shortly after, but his header from Shane Ferguson's free kick narrowly went over the bar.

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Luke Gambin came close to doubling Barnet's lead midway through the opening period, but his crisp shot was kept out by a diving Jordan Archer.

Millwall pushed hard for an equaliser before the end of the half, but Lee Martin's low shot was the best chance they had.

After the break, Tony Craig's firm volley was blocked close to goal following a Millwall corner, before Michael Nelson's volley almost put Barnet two goals up.

However, Millwall were awarded a penalty just before the hour mark as Fred Onyedinma was fouled in the box, but Steve Morison's kick rattled the crossbar.

Barnet caused problems on the counter-attack throughout the half, and Jordan Archer was forced into a low save to keep out Akinde's header.

Minutes later, Morison redeemed himself for his earlier penalty miss as he headed in Shaun Williams's free kick to bring the scores level.

The Lions pushed for a winner, as Lee Gregory wasted two opportunities inside the box, before Gavin Hoyte almost found the top corner for Barnet on the break.

The North London side took the lead again in extra time as Akinde found Andy Yiadom, and he slotted home from close range to score the winning goal.