The United Nations human rights office reported that at least ten people have been killed by security forces during the demonstrations, citing credible sources.
Hundreds of demonstrators clashed with police in Dar es Salaam, leading to military deployment, an internet shutdown, and an overnight curfew.
The Tanzanian government has dismissed the unrest as "isolated incidents" while increasing security and restricting movement, with the army head claiming the situation is "controlled".
The European Parliament has labelled the elections a "fraud", citing an atmosphere of repression, intimidation, and fear, despite provisional results showing President Hassan winning majorities.