The 15-member Southern African Development Community (SADC), which brokered Zimbabwe’s unity deal, will hold the extraordinary summit in the Mozambican capital Maputo, Yunassy Muchanga told AFP.
"They have agreed to hold a meeting here on Thursday. But we don’t know any more details yet," she said.
Mozambique currently heads SADC’s security organ, which sent a delegation to Harare last week to mediate between veteran President Robert Mugabe and Prime Minister Morgan Tsvangirai, the former opposition leader who joined the government in February.
Tsvangirai suspended cooperation with Mugabe’s party more than two weeks ago, threatening the fragile pact that had been hailed as an end to last year’s deadly electoral violence.
Joseph Kabila, president of the Democratic Republic of Congo who currently heads SADC, was in Harare on Monday for talks with both leaders.
Tsvangirai’s spokesman James Maridadi told AFP that the premier would attend the Maputo talks.
"Prime Minister Morgan Tsvangirai will be attending the conference in Maputo on Thursday to discuss the powersharing agreement," he told AFP.