THE HAGUE, Netherlands (AP) — United Nations (UN) judges have declared an elderly Rwandan genocide suspect unfit to continue standing trial because he has dementia and said they would establish a procedure to go on hearing evidence without the possibility of convicting him.

The majority decision published Wednesday by judges at the International Residual Mechanism for Criminal Tribunals means no guilty verdict can be reached in the trial of Félicien Kabuga, one of the last fugitives charged in connection with the 1994 genocide.

Kabuga, 88, is accused of encouraging and bankrolling the mass killing of Rwanda’s Tutsi minority. His trial began last year, nearly three decades after the 100-day massacre left 800,000 dead. He is in custody at a UN detention unit in The Hague.

Medical experts who have closely monitored his health said the “consequences of dementia deprive Mr. Kabuga of the capabilities necessary for meaningful participation in a trial” and “he will not recover these capacities because his condition is characterised by progressive and irreversible decline.”

In a written decision, the judges said they therefore would set up “an alternative finding procedure that resembles a trial as closely as possible, but without the possibility of a conviction.”

Kabuga is charged with genocide, incitement to commit genocide, conspiracy to commit genocide as well as persecution, extermination and murder. He pleaded not guilty. If he were convicted, he would have faced a maximum sentence of life imprisonment.

At the opening of his trial in September, prosecution lawyer Rashid Rashid described Kabuga as an enthusiastic supporter of the Tutsi slaughter who armed, trained and encouraged murderous Hutu militias known as Interahamwe.

The genocide was triggered on April 6, 1994, when a plane carrying President Juvénal Habyarimana was shot down and crashed in the capital, Kigali, killing the leader who, like the majority of Rwandans, was an ethnic Hutu. Kabuga’s daughter married Habyarimana’s son.

The Tutsi minority was blamed for downing the plane. Bands of Hutu extremists began slaughtering Tutsis and their perceived supporters, with help from the army, police, and militias.

After years as a fugitive from international justice, Kabuga, who had a $5 million bounty on his head, was arrested near Paris in May 2020. He was transferred to The Hague to stand trial at the residual mechanism, a court that deals with remaining cases from the now-closed UN tribunals for Rwanda and the Balkan wars.

Wednesday’s decision in his case came about two weeks after one of the most wanted suspects in Rwanda’s genocide, Fulgence Kayishema, who is suspected of orchestrating the killing of more than 2,000 people at a church nearly three decades ago, was arrested in South Africa after 22 years on the run.