17/02/2014 03:08 GMT | Updated 17/02/2014 03:59 GMT

Sheffield United 3-1 Nottingham Forest: Blades Fans' Pitch Invasion In Pictures

PAUL ELLIS via Getty Images
Sheffield United supporters invade the pitch after their win over Nottingham Forest

Sheffield United reached the quarter-finals of the FA Cup for the first time since 2003, and their supporters celebrated victory over Nottingham Forest with a pitch invasion.

Substitute Chris Porter took to the field in the 87th minute with the scores level and walked off having netted twice to secure a stunning 3-1 win for the League One side.

Dozens of supporters from the Bramall Lane Kop spilled onto the pitch when Porter nervelessly made it 2-1 and more crossed the white line at full-time.

United's latest cup scalp - with Aston Villa and Fulham already vanquished in earlier rounds - went down well with home fans, though manager Nigel Clough referred to the mini invasion as a "downside".

"The were 25,000 in today and the fans were incredible, that's the sort of atmosphere you want to play in," said Blades boss Nigel Clough.

"The only downside is a few supporters coming on the pitch. You understand the exuberance, but just try and stay off the pitch."

Clough's father, Brian, infamously punched two Forest fans following a win against Queens Park Rangers in 1989.

Nigel Clough found out at half-time that the winners at Bramall Lane faced a home tie against either Sheffield Wednesday or Charlton and used the possibility of a derby date with the Owls to inspire his side to overturn a 1-0 deficit.