Guterres called on all parties to refrain from further violence while the United States, a key ally, warned of sanctions if negotiations for elections did not urgently resume.
The parliamentary leaders were informed that the speaker in consultation with the chairman Senate had decided to constitute the committee comprising the leaders of the parliamentary parties.
The impasse threatens a constitutional crisis in the fragile Horn of Africa nation that is already confronting a violent Islamist insurgency, a locust invasion and serious food shortages.