On the pitch, Cameroon fought back from one goal down to snatch a late 3-2 win over Zambia to maintain their pursuit of a fifth title.
Zambia gave Paul Le Guen's men an almighty fright when Jacob Mulenga put them into an eighth minute lead, only for Geremi and Samuel Eto'o to put Cameroon back in business.
Zambia captain Christopher Katongo scored from the spot to level with nine minutes left on the clock but substitute Mohamadou Idrissou headed home the 86th-minute winner to save the Indomitable Lions' from a Cup exit.
With the final round of Group C matches on Thursday Gabon, who fought out a dour goalless draw with Tunisia in the first half of a double header, lead the pool with four points.
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Cameroon, stunned by Gabon in their opening game, have three, Tunisia two and Zambia one.
After Cameroon's third triumph over Zambia in four Nations Cup clashes Le Guen, who took over Cameroon when they were last in their World Cup/Africa Cup of Nations qualifying group, commented: "We can become better, but we started from a low base."
"We found ourselves in difficulty because Zambia play really well," the former Lyon, PSG and Rangers boss added.
"The first half was very tough for us. Afterwards things got better but I know they're good and that we were fortunate to win and to take the three points."
Down in Luanda, Ghana star Michael Essien injured his right knee training and could miss their make-or-break Group B clash against Burkina Faso on Tuesday.
"Michael suffered a right knee injury in the training session this morning," Ghana's media officer Randy Abbey said.
"He was taken to a local hospital for a scan and we'll get the results back tomorrow and then have a clearer idea of whether he can play."
Ghana are one point behind Burkina Faso and the four-time champions need a win to avoid being eliminated after the first round of the biennial African football showpiece.
Defending champions Egypt meanwhile announced they were fining Borussia Dortmund striker Mohamed Zidan after he reacted angrily to being substituted during his team's 2-0 win over Mozambique on Saturday.
Zidan refused to shake the hand of his replacement Ahmed Eid as he left the pitch after 60 minutes. He also threw his wrist band and kicked a chair in the dugout in frustration.
Egypt coach, Hassan Shehata, said Zidan will be fined and that the player apologised to the entire squad Sunday.
"Zidan felt that he wasn't playing well, that's why he was upset. It wasn't because of the substitution," Shehata said.
Monday sees the conclusion of Group A with the hosts Angola needing just a draw against World Cup qualifiers Algeria in Luanda to qualify and Malawi will join them if they beat Mali in Cabinda.
