Burundi police says they have so far arrested at least 320 people for engaging in riots that have rocked the capital Bujumbura since Sunday.
The protests broke out after the ruling CNDD-FDD party nominated President Pierre Nkurunziza as its candidate in the June 26, 2015 elections.
Nkurunziza is a former rebel leader and born-again Christian.
He has been in power since 2005 but has opted to breach the constitution as well as the Arusha Accord that ended a civil war in 2006.
The Arusha deal that ended a 13-year conflict insists that he serves for only two terms, the reason where opposition and civil society opted for riots when he was nominated to stand in the next election.
Nkurunziza deployed the army around the capital Bujumbura on Sunday after police failed to contain the riots.
During the clashes, two people were shot dead while a third person died from wounds.
More two people were reportedly executed in the night by Imbonerakure, the youth wing of the Burundi ruling party.
So far 15,000 Burundians have fled the country to neighbouring Rwanda, according to the UN’s refugee agency for fear of being killed by the pro-government militia (Imbonerakure).
Rights groups allege that the militia has been armed and trained over the past year in order to help Nkurunziza remain in office.
On Monday, police once more fired teargas to disperse about 1,000 protesters in Cibitoke province in the north of Bujumbura and in Musaga district.
Police also raided the headquarters of a media association and arrested an influential human rights activist, Pierre-Claver Mbonimpa.
Police is also hunting down Vital Nshimirimana, the head of a prominent NGO forum.
The government has now shut down Burundi’s main independent radio station, African Public Radio (RPA).
Activists say this is only the beginning; they will fight on until Nkurunziza denounces his candidature.