KINSHASA - United Nations peacekeepers are supporting a Congolese army offensive in which a warlord wanted by the International Criminal Court (ICC) is playing a prominent role, Congolese army documents showed on Wednesday.

An April 4 Congolese army (FARDC) internal report seen by Reuters refers to Jean Bosco Ntaganda as deputy coordinator for the offensive in eastern Congo against Hutu rebels.

The ICC issued an arrest warrant for Ntaganda -- known as the Terminator -- last year. Prosecutors in The Hague accuse him of recruiting children under the age of 14 to fight in Ituri in eastern Democratic Republic of Congo in 2002 and 2003.

MONUC, the U.N. mission in Congo, said in January it would not take part in any operation involving Ntaganda. But a MONUC report sent to the mission's head, Alan Doss, on April 8 showed that U.N. officials were told of Ntaganda's position within the army's structure.

His role up to now is that of adviser to General (Dieudonne) Amuli for the operations, Colonel Delphin Kahimbi, the army's commander of operations for South Kivu, told Reuters last week.

MONUC is providing logistical and military support for the army's efforts to combat a rebel resurgence in North Kivu. It is also backing the FARDC as it prepares to extend operations into neighboring South Kivu.

Congolese Defense Minister Charles Mwando Nsimba said on Tuesday that the South Kivu offensive against the Rwandan Hutu rebel Democratic Forces for the Liberation of Rwanda (FDLR) would begin within 10 days and last three months.

HEAD IN THE SAND

Doss told Reuters on Tuesday he could not comment on the army document, but said he had followed up a U.N. intelligence report about Ntaganda's reported involvement.

Based on that report, we certainly contacted the FARDC authorities and, I was away at the time, but I received a call from a very senior official in the FARDC, who assured me that that was not the case, Doss said in an interview.

Certainly, in the documents that I've seen, -- the official documents regarding the command structure -- his name doesn't appear, he said. Until I have direct evidence to the contrary, I take them at their word.

Ntaganda was integrated into Congo's army in January along with other members of the Tutsi-dominated National Congress for the Defense of the People (CNDP) after the arrest of the rebel insurgency's leader, General Laurent Nkunda.

Rights campaigners and European diplomats have called on MONUC to arrest Ntaganda but Doss said it was up to the government, not the U.N., to execute the ICC warrant.

New York-Based Human Rights Watch (HRW) accused MONUC on Tuesday of burying its head in the sand over the issue of Ntaganda's role in the army command structure.

U.N. senior officials wilfully choose to ignore the mounting evidence, preferring to brush it aside as rumors, even when the information is confirmed, Anneke Van Woudenberg, HRW's senior Congo researcher, told Reuters.

Instead they take empty assurances from senior Congolese authorities that Ntaganda plays no role.

Ntaganda is a former associate of Congolese warlord Thomas Lubanga, a defendant in the ICC's first trial in The Hague.

Rwanda