MOGADISHU, June 10 (Xinhua) -- Somali opposition group will next week sack their leader Sheik Sharif Sheik Ahmed who on Monday signed a peace deal with the Somali transitional government in Djibouti, Zakariya Mohmoud, deputy chairman of the Alliance for the Reliberation of Somalia (ARS) said on Tuesday.

    "The meeting next week is intended to dismiss Sheikh Sharif. The Alliance will not recognize any agreement signed by Sheikh Sharif with the Somali authorities," Mohmoud told Shabelle Radio in Mogadishu by phone.

    This comes a day after a peace deal was signed by the Somali transitional government and members of the ARS led by Sheik Sharif Sheik Ahmed, chairman of the opposition group. Ahmed split with other hardline senior members of the alliance who wanted not to talk with the Somali government as long as Ethiopian troops were in Somalia.

    "The ARS Central Committee will meet next week to put an end to Sheikh Sharif's betrayal of the ARS principles, cancel the unilateral decisions he has made, and reject the stances he has taken which are against to the ARS policy," Mohmoud said.

    The Somali transitional government and the opposition leaders Monday signed a comprehensive agreement in Djibouti after ten days of talks sponsored by the UN. Both agreed on a 90-days renewable ceasefire agreement which should be effective throughout the war-torn Horn of Africa nation.

    The two sides also agreed that the Ethiopian troops will withdraw within 120 days after UN peacekeepers are fully deployed in Somalia. A 15-member joint committee chaired by the UN envoy to Somalia will visit the country and make sure the implementation of the Djibouti agreement.

    The talks which began late last month was attended by top leaders of the ARS but was boycotted by hardline members, causing the split of the opposition.