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Cameroon 1-2 Nigeria: Cameroon's Joel Doumbe Perrier fights for the ball with Nigeria's Nwankwo Kanu during a niggly opening

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But in the 42nd minute a long ball finds Cameroon's Samuel Eto'o and he finishes well to give his side the lead

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Highly-rated striker Eto'o celebrates his first goal of the tournament with his delighted team-mates

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Cameroon's joy is short-lived as Nigeria's inspirational captain Jay-Jay Okocha fires in a brilliant free-kick just minutes later

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And 17 minutes from time John Utaka latches on to Kanu's pass to fire Nigeria into the lead

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Nigeria celebrate a hard-fought 2-1 victory which sees them set up a semi-final clash with hosts Tunisia

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Morocco 3-1 Algeria (aet): Both sides seem beset with nerves as a goalless first-half is littered with fouls

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Neither side has many chances to score as the game remains scoreless well into the second-half

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Algeria's Cherrad gives his side the lead in the 84th minute only to see it cancelled out in injury time as the match goes into extra-time

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Morocco prove to much for Algeria in extra-time and score twice to book up a semi-final clash with Mali