BBC:
Tanzanian President Samia Suluhu Hassan has been sworn in for a second term amid tight security, following an election marred by violent protests and rejected by the opposition as a sham.
The inauguration ceremony is being held at a military parade grounds in the capital, Dodoma, in an event closed to the public but broadcast live by the state-run TBC.
Samia was declared the winner on Saturday with 98% of the vote. She faced little opposition with key rival candidates either imprisoned or barred from running.
International observers have raised concerns about the transparency of the election and its violent aftermath, with hundreds of people reportedly killed and injured.