Striker Winston Kalengo's goal was canceled out by Ary Papel's strike to make sure Zesco United and Primiero de Agosto played out to a 1-1 draw.
Zesco United broke the deadlock in the 49th minute after missing a lot of chances in the first half. Winston Kalengo headed home Mwape Mwelwa's beautiful cross four minutes into the second half to put the hosts in the lead.
The visitors leveled matters 21 minutes to full time, Ary Papel with a fine finish from the edge of the box leaving Jacob Banda in the Zesco United goal with no chance.
In the end, the two teams had to settle for a point each meaning Agosto joins Zesco United as the confirmed two eliminated teams from Group A.
TP Mazembe and Egyptian giants Zamalek SC have qualified to the quarter-finals as group leaders and runners up.