A Fan attacks Nottingham Forest players during their goal celebration as the Championship side knock out Leicester City from FA Cup (Photos)

Nottingham Forest have knocked out the holders of the FA Cup, Leicester City.

If you recall that The Championship side shocked Arsenal in round three and they have defeated the Foxes 4-1 in round of four.

Forest took the lead on 23 minutes when Philip Zinckernagel finished from close range after Keinan Davis nodded down Brennan Johnson’s cross.

Johnson doubled Forest’s lead within 30 seconds, intercepting a backpass from James Justin to slot beyond Danny Ward in the Leicester goal.

Just after the half hour, Forest put the game beyond their rivals when captain Joe Worrell headed beyond Ward from James Garner’s corner.

Leicester pulled one back five minutes before the break when Forest keeper Brice Samba went charging out of his goal allowing Kelechi Iheanacho to put the ball into an empty net from a tight angle.

Meanwhile, a fan’ ran onto the pitch and attacked Nottingham Forest players while they celebrated scoring a goal vs. Leicester.