Gateano Berardi had fired the visitors in front on nine minutes with a low drive through a crowd of bodies but an inspired second-half display turned the match on its head.

Despite the Championship side taking an early lead, the Exiles set about doing all they could to bridge the 53-place gap in the English league pyramid with a valiant display.

On 76 minutes, Frank Nouble’s cross from the right was missed by his team-mates, only for Leeds defender Conor Shaughnessy to accidently tap into his own net off his shin.

There was late drama to be had though as Shawn McCoulsky headed home a 89th minute header from a corner to send the home fans wild.

Things went from bad to worse for Leeds moments later as Samuel Saiz was sent off.

Newport County are into the fourth round of the FA Cup for the first time since 1979.

Newport County: Day, Pipe, Demetriou, O’Brien, Butler, Bennett, Dolan (McCoulsky 69’), Labadie (C), Willmott, Nouble, Amond

Subs not used: Bittner, Tozer, Reid, O’Brien, Sheehan, Hayes

Leeds: Lonergan, Borthwick-Jackson (Cooper 60’), Berardi (C), Shaughnessy, Anita, Cibicki, Klich, Phillips, Sacko, Lasogga, Grot (Saiz 75’)

Subs not used: Peacock-Farrell, Pearce, Clarke, Kitching, Rey