Join the debate at #bbcfootballpublished at 21:26 Greenwich Mean Time 31 January 2015
Zeiyad Y:, external Referee having a shocker I'm afraid, too many bad decisions.
Balboa free-kick seals win for Eq Guinea
Tunisia ranked 96 places higher than hosts
Congo 2-4 DR Congo
LeRoy's Congo had led 2-0
James Gheerbrant
Zeiyad Y:, external Referee having a shocker I'm afraid, too many bad decisions.
The referee is struggling to keep a lid on this, Tunisia tempers are boiling over. A challenge from Ivan Edu earns him a yellow card and starts a mini-brawl. The Equatorial Guinea striker is eventually booked. He'll miss the semi if they make it.
BBC World Service's Matthew Kenyon in Bata
"It is a noise and a half in this stadium and it looks like we are heading for an extra half hour here."
The Tunisians are still furious as we restart. Oles ringing out around the Estadio de Bata. We're heading for extra time. Five added minutes, three remain.
BBC World Service's Piers Edwards in Bata
"It is an extraordinary end to this match. The Tunisia players are still complaining."
Simon:, external How on this planet was that a penalty?
There are lasers shining in the eyes of Tunisia keeper Aymen Mathlouthi as Javier Balboa prepares to take the spot-kick. When he gets his chance, he waits for the keeper to commit and then rolls it the other way.
It's Equatorial Guinea's first goal in the knockout stages of a major tournament - but boy is it a controversial one.
Ivan Bolado dribbles into the area, tumbles under the challenge of Ali Maaloul - the referee says penalty!
The Tunisians are furious - that looked like a dive.
Time running out for the hosts. Have they got one last chance in them?
Double change for Tunisia - Mohamed Ali Moncer and Amine Chermiti are on for Wahbi Khazri and Ahmed Akaichi.
And the hosts make their last switch, Sipo off, Ruben Belima on.
BBC World Service's Piers Edwards in Bata
"Absolutely vital save. He has only had one big one to make in this game and he made it count. Top goalkeeping."
Big, big chance for the hosts. Ivan Edu slips Emilio Nsue through with a great through-ball, he gets a shot away but is denied by a brilliant sprawling save by Aymen Mathlouthi. Iban Bolado was free in the centre if he'd squared it...
BBC World Service's Piers Edwards in Bata
"Given the fact they have created the clearer opportunities Tunisia deserve to go through. They have caused Equatorial Guinea problems."
Ten minutes for the hosts to save themselves. What have they got left?
There's a change for the hosts, Randy making way for Iban Bolado.
Tunisia are knocking on the door now. Yacine Chikhaoui tricks his way to the byline and pulls it back for Ahmed Akaichi, who is denied by a desperate block.
This game has opened up. A barnstorming run takes Ahmed Akaichi into the penalty area, but his finish drifts weakly across the face of goal.
Tunisia skipper Yacine Chikhaoui gets involved in a bit of nonsense with Equatorial Guinea striker Ivan Edu. Tunisia just have to keep their heads here. Can the hosts muster an improbable comeback?
BBC World Service's Piers Edwards in Bata
"When Ahmed Akaichi was celebrating, one of his team-mates just chopped him down with his foot. Not the best thing to do with 20 minutes left to play."
BBC World Service's Matthew Kenyon in Bata
"The stadium has gone absolutely silent."