Rwasa (right) is greeted in Dar Es Salaam by the Tanzanian president Benjamin Mkapa, months after an arrest warrant was issued against the FNL leader for "crimes against humanity and war crimes".
Twenty civilians have died at the hands of the FNL since early September, according to the Burundian human rights group Ligue Iteka.
The group has also raised concerns about eleven killings by government forces, together with reports of torture and arbitrary arrests.
There has been no further news on the whereabouts of Agathon Rwasa, who was reportedly deposed by a pro-peace faction of the FNL eight days ago.
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Burundi, human rights, Current Affairs, Politics, Africa