Senior leaders from Somalia's main Sufi group Ahlu Sunna wal Jamaa on Tuesday denounced a deal struck last week by some of its members with the government during a meeting in Addis Ababa.

The Ethiopian foreign ministry had issued a statement on Saturday announcing an agreement between the embattled internationally-backed transitional federal government and the Sufi group to combat the country's Islamist insurgency.

But some of the Sufi movement's top figures argued that those who reached the deal in Addis were not representative of the group and not authorised to set policy.

"The so-called agreement reached and discussions that took place in Addis Ababa were misleading and created a rift within Ahlu Sunna followers," Sheikh Omar Sheikh Mohamed Farah, a top Ahlu Sunna leader, told AFP in Mogadishu.

He argued that "the Addis deal does the Shebab and other anti-peace groups a favour by promoting some individuals over others and undermining a planned Ahlu Sunna general assembly to be held soon."

Abdulkadir Mohamed Somow, another leader, said that one faction with Ahlu Sunna had "hijacked the process" by dealing directly with the federal government in the organisation's name.

He suggested the government was deliberately trying to sow division.