BOUAKE, Ivory Coast - Angola's Gelson Dala scored twice as they reached the Africa Cup of Nations quarter-finals with a comprehensive 3-0 last-16 victory over neighbours Namibia, who were left to rue four mad first half minutes on Saturday.

Angola, who claimed their biggest ever Cup of Nations finals win, had an early setback when goalkeeper Neblu received a red card and they were under pressure from a Namibia side that looked the most likely to find the net.

But the game turned when Gelson opened the scoring after 38 minutes, Namibia defender Lubeni Haukongo received a red card shortly afterwards and the Angola forward completed his double from the resulting free-kick.

Angola added a third goal through Mabululu in the second period and now await a quarter-final tie against the winners of the last-16 clash between Nigeria and Cameroon that will be played later on Saturday. REUTERS