That's according to the opposition CHADEMA movements presidential candidates to do listen, who sent on Monday that at around midnight he received the message that boy and several others had been taken in.

The regime is is scared and they're going to be very, very violent.

Also arrested were former lawmaker God Bless Lemma, the former mayor of Dar Salaam.

Is I Amita on the former mayor of a bongo municipality, Boniface Jacob.

Tanzania's opposition has demanded a repeat of last Wednesday's election, citing irregularities and has called for protests.

Theo East African countries electoral commission says incumbent John Magufuli won the pole with 84% of the vote.

Concerns have been raised internationally about Tanzania's vote, with the United States raising concerns about reports of systematic interference in the democratic process and Britain saying it was troubled by the reports of violence and heavy handed policing.