Reuters International

By Aaron Ross

KINSHASA (Reuters) - Democratic Republic of Congo opposes an international investigation into the deaths of two U.N. investigators, the foreign minister said on Thursday, amid mounting criticism of the Congolese authorities' own probe.

Congolese military prosecutors announced last weekend that two alleged militiamen would soon face trial for the March killings of U.N. investigators Zaida Catalan, a Swede, and American Michael Sharp in the insurrection-plagued Kasai region.

Rights groups, however, say they suspect Congolese forces could have been involved in the deaths. A U.N. spokesman on Tuesday cast doubt on the credibility of the Congolese investigation, saying the world body was "taken aback at the rapidity at which it was done".

A U.N. board of inquiry is investigating the experts' deaths but is not expected to assign blame, leading some rights campaigners to call for a formal international investigation.

"Congolese expertise in this matter must be respected," Foreign Minister Leonard She Okitundu told Radio France Internationale, accusing unnamed U.N. Security Council members of trying to discredit the Congolese justice system.

On Saturday, The New York Times reported that Catalan had obtained a recording of a phone call in which ex-development minister Clement Kanku speaks approvingly of violence perpetrated by a local militia to a presumed militia member.

According to the Times, Catalan had informed Kanku she was in possession of the recording.

Congo's attorney general announced on Tuesday he had opened an investigation into the former minister's possible role in militia violence. Kanku has denied any wrongdoing.

Catalan and Sharp disappeared in March in central Congo's Kasai region, where hundreds have died since last July in an insurrection against the government. Their bodies were found two weeks later in a shallow grave.

Last month, the government screened a video for journalists showing their executions by men wearing red headbands characteristic of the local Kamuina Nsapu militia to rebuff suggestions authorities were complicit in the killings.

But many analysts say the grainy and highly-edited video raises more questions than it answers, including why the assassins from the Tshiluba-speaking militia gave orders in Lingala, the language of western Congo and the army.

The investigators' interpreter and three motorcycle taxi drivers who went missing with them have not been found.

(Reporting by Aaron Ross; Editing by Joe Bavier and Tom Heneghan)

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