Mauritanians are voting for the first time since the country gained independence from France in 1960.
The 62-year-old is standing down after serving the maximum two five-year elected terms.
However the status quo is likely to prevail when a new leader is elected.
Abdel Aziz has expressed his support for Mohamed Ould Ghazouani, who is a former general and defense minister.
Global airlines race to fix A320 jets after Airbus recall
Global airlines scrambled on Saturday to fix a software glitch on their Airbus A320 jets as a recall by the European planemaker temporarily grounded aircraft in Asia and Europe and threatened travel in the US during the busiest weekend of the year.
Death toll in Sri Lanka rises to 153 after Cyclone Ditwah
At least 153 people have been killed in Sri Lanka after landslides and flooding caused by Cyclone Ditwah, officials said on Saturday, with 191 others missing and more than half a million affected nationwide.
Hong Kong mourns victims of blaze that killed 128 and counting
Hong Kong on Saturday mourned the 128 people known to have died in a massive fire at a high-rise apartment complex, a toll that is likely to rise with 200 others still unaccounted for days after the disaster.
Vast Russian overnight attack on Ukraine kills two, wounds dozens
A vast Russian overnight attack on Ukraine killed two people and wounded two dozen, Ukraine's foreign minister said on Saturday, adding that Moscow continued to "kill and destroy" while the world was discussing peace plans for the conflict.
Latest With Hit
Akhil Kavalayoor live on Radio Active
Latest With Hit
Watch Dona & Jean as they grove to SakkathaGavle !
Latest With Hit
Ted X speaker, AI trainer Raul John Aju giving us AI lessons.
