Morocco came from behind to defeat Togo 3-1 at the same venue with Aziz Bouhaddouz, Romain Saiss and Youssef En-nesyri netting after Mathieu Dossevi had opened the scoring.
DR Congo are top of Group C with four points and know a draw with Togo in their last game in Port-Gentil on Tuesday will take them through to the quarter-finals.
Meanwhile, the Ivory Coast trail Morocco by a point and so have no choice but to win when the teams clash in their last match.
This latest result puts destiny in the hands of Morocco, their much-needed win crafted by the brilliance of Deportivo’s Faycal Fajr.
Fajr laid on both the first two goals, grabbing the game by the scruff of the neck and proving his country’s creative catalyst.
They will be hoping he can recreate such form in the final game showdown with Ivory Coast.
Senegal put a string of disastrous Africa Cup of Nations campaigns behind them Thursday by beating Zimbabwe 2-0 and becoming the first qualifiers for the 2017 quarter-finals.
The Group B match was all but over as a contest after only 13 minutes in Gabonese city Franceville after Liverpool star Sadio Mane and Henri Saivet scored.
Since finishing fourth in 2006, the Senegalese have suffered a horror run in the premier African football competition, failing to get past the group stage three times and not even qualifying twice.
Now they are guaranteed to top Group B — whatever the result of their final fixture against battling Algeria next Monday.
Mane, seen as his country’s talisman and most potent threat going forward, was the star man and as long as he turns out performances like this then Senegal will remain hopeful of making a mockery of that woeful AFCON record in recent years.
For a while on Wednesday, it seemed like Cameroon would be on the receiving end of one of the greatest upsets in African Cup of Nations – or indeed, football – history.
Minnows Guinea-Bissau had taken a shock lead in the 13th minute, and held onto their lead until the hour mark of the match before Cameroon finally found an equaliser. 17 minutes later, Cameroon defender Michael Ngadeu-Ngadjui netted into the bottom corner of the Guinea-Bissau goal with a superbly-taken strike.
The Slavia Prague defender’s goal means Cameroon are in charge of Group A, after tournament hosts Gabon spluttered to another draw, against Burkina Faso.
The Indomitable Lions are on top of the group with four points, ahead of Gabon and Burkina Faso on two. Guinea-Bissau, for all their heroics, languish on one point. Cameroon need only a draw in their final group match, against Gabon, to qualify for the quarter-finals.