Niger accused France on Wednesday of violating its airspace, attacking a military camp and freeing "terrorists" to undermine the country. Paris denied the charges.
ECOWAS, a regional West African bloc, said it could activate its Standby Force to impose stability in Niger. Coup leaders have ignored previous invasion threats.
West African states will hold a summit on Thursday to discuss Niger’s junta, after backing down from military intervention, as fears of a power vacuum grow.