Cape Verde into quarter-finals of Africa Cup of Nations after beating ...

Cape Verde defender Roberto Lopes challenges Souleymane Anne of Mauritania during the Africa Cup of Nations Round of 16 match in Abidjan, Ivory Coast. Photograph: Legnan Koula/EPA

Ryan Mendes converted a late penalty as Cape Verde beat Mauritania 1-0 in Abidjan to seal their place in the quarter-finals of the Africa Cup of Nations.

Cape Verde captain Mendes struck the decisive spot kick in the 88th minute and the Blue Sharks will now face either Morocco or South Africa in the quarter-finals.

Cape Verde, one of the surprise teams of the tournament after finishing unbeaten at the top of Group B ahead of Egypt and Ghana, were second best for most of the first half, but finished strongly to secure their passage.

Mauritania reached the tournament’s knock-out stages for the first time by defeating two-time winners Algeria 1-0 in their final group game to progress as one of the best third-placed teams.

The first-half action was end-to-end, but clearcut chances were at a premium, while Mauritania were dealt a blow in the 35th minute when Omare Gassama was carried off on a stretcher and replaced by Guessouma Fofana.

Mendes’s early effort for Cape Verde was deflected into the side-netting and Mauritania captain Mouhsine Bodda curled a 15th-minute free-kick just wide.

Mauritania made all the early running in the second period and Souleymane Anne missed the game’s best chance from open play when firing wide after Sidi Amar’s surging run into the penalty area just before the hour-mark.

Cape Verde, with Shamrock Rovers centre back Roberto Lopes in the starting XI again, came on strongly in the closing stages with both Garry Rodrigues’s drive and Mendes’s header forcing Mauritania goalkeeper Babacar Niasse into excellent saves.

The game’s decisive moment came in the 87th minute when Yassin El Welly’s misplaced headed back pass was pounced on by substitute Gilson Benchimol, who was brought down by Niasse for a clear penalty.

Mendes held his nerve, drilling his spot-kick down the middle and the Blue Sharks saw out 10 minutes of added time to seal their place in the last eight.