All the best photos from Anfield as Liverpool beat Arsenal on penalties after a thrilling encounter that saw both sides score five goals.
Jurgen Klopp's young Reds got off to the best possible start as Shkodran Mustafi scored an own-goal inside the opening ten minutes.
However, the Gunners hit back with three goals in 17 minutes as Lucas Torreira equalised and Gabriel Martinelli put the visitors ahead with a brace.
James Milner scored a penalty before half-time after Harvey Elliot was brought down in the box, only for Unai Emery's side to make it 4-2 through Ainsley Maitland-Niles minutes after the interval.
With seconds remaining, youngster Neco Williams' cross was met by Origi, who acrobatically turned the ball into the back of the net with a stunning bicycle kick to take the game to penalties.
Liverpool will find out who their quarter-final opponents will be in the draw on Thursday morning, although Klopp has suggested his side could drop out of the competition due to fixture congestion.
Slide through our gallery below for all the best snaps from a roller-coaster night on Merseyside.