Tanzanian Samia Suluhu Hassan was soon sworn in for a second term following an election marred by violent protests and dismissed by the opposition as a sham.
The inauguration ceremony was held at a military parade ground in the capital, Dodoma, in an event that was closed to the public but broadcast by TBC in the state.
Samia was declared the winner on Saturday with 98% of the vote. He faced little opposition from the main rival candidates who were jailed or banned from running.
International observers raised concerns about the transparency of the election and its violent aftermath, with hundreds of people reportedly killed and injured.
Authorities sought to contain the scale of the violence. It is difficult to obtain information from the country or verify the death of the deceased, amid a national shutdown of the Internet in place from the day of the election.
In his victory speech, Samia said the poll was “free and democratic” and described the protesters as “irrational”.
Opposition leaders and activists say hundreds have been killed in clashes with security forces. The Chadeema Force in Chadeema told the AFP News Agency that it was recorded that “no less than 800” originated in Tanzania on Saturday with at least 500 people killed.
The UN Human Rights Office earlier said there were credible reports of at least 10 deaths in the three towns.