In particular he had allowed the militants to use tea factory vehicles on their rampages.

Bagaragaza, who had testified against other suspects in earlier hearings of the court, including Harbyarimana's brother-in-law, had been detained in the Netherlands.

Claiming to fear for his life, he had secured a deal with the ICTR's prosecutor whereby in return for his testimony against other defendants he would be tried in Europe.

But attempts to have him tried in Norway and the Netherlands came to nothing and he was sent to the Arusha court in May last year.

Formed in late 1994, the UN-backed ICTR is responsible for judging primary suspects in the Rwanda genocide.