KATHMANDU, Sept. 6 (Xinhua) -- The Nepali government is likely to send a letter to the United Nations Monday requesting the Security Council to extend UN Mission in Nepal's (UNMIN) term by three or four months with reduced mandate, according to sources at the Prime Minister's Office.

"In the updated mandate, UNMIN will be relieved from its responsibility of monitoring the management of arms and armed personnel of Nepali Army," Prime Minister's Foreign Affairs Adviser Rajan Bhattarai told Monday's The Himalayan Times daily.

M.K. Nepal-led government and its coalition partners are reluctant to keep the national army under UN supervision for long, saying continued monitoring of national army will affect its training and recruitment process and hamper the organisational capabilities as a whole.

Unified Communist Party of Nepal (Maoist) has been opposing curtailment of the UNMIN's mandate. It has warned that peace process would become a failure if UNMIN was not allowed to monitor the Nepali Army.

According to the daily, UN Secretary General Ban Ki-moon is scheduled to submit his report about Nepal's peace process and the UNMIN's term to the UNSC on September 7. Before that Nepal must convey its decision to the UN.

Nepal has already taken up the issue with the envoys of the Unites States, Britain, Russia, China and Japan.

Established in January 2007 by the Security Council, UNMIN's sixth term expires on Sept. 15.