He has described efforts to send him back to Rwanda as a death sentence, telling Belgian news site La Libre, "if I go to [Rwanda's capital] Kigali, I'll be a dead man".

He has already served a 20-year sentence for his part in the deaths of 10 Belgian UN peacekeeping staff in Rwanda in 1994.

The murders triggered the departure of Belgian peacekeepers from Rwanda - a key development in the events which led up to the genocide, in which around 800,000 ethnic Tutsis and moderate Hutus were killed.

Ntuyahaga was released from a Belgian jail in June but remained in a refugee centre as he sought asylum in Belgium.

Denmark, where his family lives, had refused to take him in.