Khukhi’s nimble effort allowed Diya to pounce, and the 26-year-old striker needed no other invitation to loft the ball over the near post to give Senegal the lead.
With the Qatari crowd thinning out at the start of the second half, Famara Didho doubled Senegal’s advantage in the 48th minute with a superb header from an Ismail Jacobs corner.
Muntari reduced the deficit in the 78th with a bullet header from Ismail Mohamed’s cross, but Senegalese substitute Bamba Dieng netted his side’s third to send Qatar to the bottom of Group A without a point, while Their group rivals have three.