Nairobi police arrest Tanzanian opposition leader Freeman Mbowe

Chadema leader arrested alongside former politicians as opposition calls for protests against election outcome

Tanzanian police have arrested Freeman Mbowe, the leader of the main opposition party, Chadema, according to Tundu Lissu, the party's candidate in last week's presidential election.

The opposition has demanded a repeat election, citing widespread irregularities, and called for protests against the outcome, which returned President John Magufuli to office with 84% of the vote.