The Nigerien junta has warned its West African neighbors from carrying out a military intervention in the country. Meanwhile, coup supporters attacked the French Embassy amid unrest in Niamey.

West African leaders voted to suspend ties with Niger at an emergency summit of the Economic Community of West African States (ECOWAS) on Sunday over the military coup earlier this week.

ECOWAS also agreed to immediate financial sanctions against Niger and authorized the use of force if the junta doesn’t cede power and release the country’s elected president Mohamed Bazoum from detention.

“In the event the authorities’ demands are not met within one week, [we will] take all measures necessary to restore constitutional order in the Republic of Niger,” said Omar Alieu Touray, president of the ECOWAS commission.

“Such measures may include the use of force. To this effect, the chiefs of defense staff of ECOWAS are to meet immediately.”

The meeting came amid major protests against any intervention by ECOWAS or other powers, and coup supporters also attacked the French Embassy in Niamey.

General Abdourahamane Tchiani, the head of the powerful presidential guard, declared himself the leader of Niger on Friday.

Niger is among the world’s poorest countries and receives nearly $2 billion (€1.8 billion) a year in official development assistance, as per the World Bank.

Niger’s former colonial ruler France and the European Union have already suspended security cooperation and financial aid to the country.