Zanaco opened a seven-point lead after defending champions Zesco United suffered their first league defeat of the season in their respective league game on Wednesday.
Zanaco beat Red Arrows 2-0 at home in Lusaka while Zesco were shocked 2-1 by visiting bogey team Nkwazi in Ndola.
At Sunset Stadium, Zanaco extended their lead by another three points thanks to goals from Moses Phiri and Aubrey Funga in the 43rd and 54th minutes respectively.
Zanaco have 27 points to remain the only unbeaten team in the FAZ Super Division this season.
Meanwhile, Zesco stay put on 20 points after police outfit Nkwazi arrested their unbeaten run this season.
Nkwazi took the lead in the 14th minute through Lottie Nyimbili before Winston Kalengo equalised in stoppage time of the first half.
Chipungu Musukuma stunned Zesco in the 60th minute when he stomped in the ball after beating the offside trap.
The result has left Zesco without a home win over Nkwazi since the 2010 season after suffering their third successive loss in Ndola to the Police side.
[standings league_id=1 template=extend logo=false]