KAMPALA, Uganda -- Uganda’s presidential election was plagued by widespread delays Thursday in addition to a days-long internet shutdown that has been criticized as an anti-democratic tactic in a country where the president has held office since 1986.

Technical failures at polling places have caused disruptions, and the opposition has warned of government vote rigging amid an internet blackout.

Ugandans are voting in a tense presidential election as 81-year-old President Yoweri Museveni seeks to extend his four-decade rule amid an internet shutdown and heavy military deployment.

Uganda election marred by violence and internet blackout as one MP accuses security forces of killing 10 supporters at his home during crackdown.

Millions of Ugandans will Thursday cast their votes in a crucial presidential rematch between a former pop star and their long-time authoritarian leader, who aims to prolong his nearly 40-year rule.