Jack Harrison scored a stunning 25-yard drive as Leeds United progressed into the FA Cup fifth round for the first time since 2016 at the expense of League OneAccrington Stanley.
Harrison, who has been linked with a £20m move to Leicester City, fired left-footed into the bottom-right corner after Patrick Bamford's lay-off to break the deadlock halfway through the first half.
Leeds continued to press in a lively first half that saw 18 shots, with Luis Sinisterra having a curling effort tipped on to the post.
They got the second goal their excellent forward play deserved when Junior Firpo linked up brilliantly with Bamford, with the striker's dragged reverse pass allowing the left-back to slot home for his first Leeds goal.
Sinisterra then sealed Leeds' comfortable passage when he opened his body and guided home Harrison's cut-back from the penalty spot.
Accrington started brightly and eventually got their reward when 18-year-old substitute Leslie Adekoya scored his first senior goal with a clever dink over Illan Meslier, 38 seconds after coming off the bench.