Gelson Dala raised his Africa Cup of Nations goal tally to four with a brace for 10-man Angola in a 3-0 last-16 triumph over Namibia in Bouake on Saturday.
After Dala scored twice in the first half, Mabululu netted midway through the second half to effectively end as a contest the clash of southern Africa neighbours.
Both teams were reduced to 10 men by first-half red cards with Angola goalkeeper Neblu and Namibia defender Lubeni Haukongo sent off.
The winning margin was a record for Angola, bettering two-goal victories over Senegal and Malawi in previous Cup of Nations.
