FA Cup holders Leicester City suffered a shock fourth-round loss to east Midlands rivals Nottingham Forest in a pulsating game at the City Ground.
Forest, eighth in the Championship, took the lead with a well-worked goal that saw Keinan Davis head down Brennan Johnson's cross and Philip Zinckernagel poking the ball past Danny Ward.
Within 30 seconds, the hosts had doubled their advantage, Johnson finishing after a terrible backpass from James Justin. It became 3-0 when returning captain Joe Worrall powered in a header at the back post from James Garner's corner.
Premier League Leicester were handed a lifeline when home goalkeeper Brice Samba made an error and that enabled Kelechi Iheanacho to roll the ball into an unguarded net, but they were not able to fight back.