Super Eagles players, Kelechi Iheanacho and Wilfred Ndidi both scored as Leicester outclassed League One Peterborough to reach the FA Cup fifth round.
Iheanacho struck twice while Ndidi who came in as a substitute added a fifth Leicester goal two minutes past regulation time.
Mali international, Diabate – signed from French side Gazelec Ajaccio – toe-poked in and Iheanacho guided the ball into the corner to put the visitors in control.
Ex-Manchester City forward Iheanacho volleyed home Christian Fuchs’ cross for a 3-0 half-time lead.
Posh improved after the break, pulling one back through Andrew Hughes, but Malian Diabate and substitute Wilfred Ndidi struck late on for the Foxes.
Iheanacho is yet to score a league goal since his £25m summer move but has scored nine FA Cup goals in nine ties since January 2016 – more than anyone else.