Two-time Chan champions DR Congo needed a late strike by Amadeau Masasi to salvage a 1-1 draw against Libya in Group B to ensure they continue leading their pool.
Captain Muetaz Husayn Almahdi scored for the opponents at Stade Omnisport de Douala on Thursday night.
DR Congo had won their first game against rivals Congo by a solitary goal, and another win would have guaranteed them early progression to the quarter-finals of the competition.
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On the other hand, the Mediterranean Knights had shared the spoils with Niger as they settled to a goalless draw in their opening game of the group played last Sunday.