The Economic Community of West African States (ECOWAS) has lashed threats by Niger's military rulers to prosecute ousted president Mohamed Bazoum, saying this contradicted the regime's declared willingness to resolve the crisis peacefully.
The coup leaders who toppled Mr Bazoum said last night they had gathered evidence enabling them to prosecute Mr Bazoum for "high treason and undermining the internal and external security of Niger."
This, it said, was based on "contacts" he had had with "nationals... foreign heads of state... (and) officials in international organisations."
In a statement today, the West African bloc said it had learned of the threats "with stupefaction".
"It represents yet another form of provocation and contradicts the reported willingness of the military authorities in the Republic of Niger to restore constitutional order through peaceful means," the bloc said.
Mr Bazoum, 63, and his family have been held at the president's official residence since the coup, with international concern mounting over his conditions in detention.
African Union holds talks on Niger crisis
The threats come as the African Union (AU) held talks today on the Niger crisis as the country's post-coup rulers sounded defiant, but also pointed to diplomacy for a potential solution.
But talks at the AU's headquarters in the Ethiopian capital Addis Ababa coincided with a flareup over threats by the regime to prosecute Niger's deposed president.
"AU's Peace & Security Council meets to receive an update on the evolution of the situation in Niger and the efforts to address it," the pan-African body said in a post on X, formerly known as Twitter.
Those attending included AU Commission chief Moussa Faki Mahamat as well as representatives from Niger and ECOWAS, it said.

President Mohamed Bazoum, whose election in 2021 was a landmark in the country's troubled history, was toppled on 26 July by members of his presidential guard.
His ouster unleashed a shockwave around West Africa, where Mali and Burkina Faso - likewise battered by a jihadist insurgency - have also suffered military takeovers.
Seeking to stop the cascade, ECOWAS slapped sanctions on Niger and last week approved deployment of a "standby force to restore constitutional order."
But uncertainties hang over any intervention - from operational feasibility to internal divisions within ECOWAS - and the bloc also says it wants a peaceful outcome.
On 30 July, it issued a seven-day ultimatum to restore Mr Bazoum or face the potential use of force, but the deadline expired without action.
Defiance and diplomacy
Mixed signals have emerged from the regime as the crisis nears the end of its third week.
At the weekend, the coup leaders said they were open to a diplomatic push after their chief, General Abdourahamane Tiani, met with Nigerian religious mediators.
Those talks came after a scheduled meeting of ECOWAS military chiefs in Ghana was postponed for "technical reasons."
Earlier today the military-appointed prime minister, Ali Mahaman Lamine Zeine, a civilian, declared Niger would thwart ECOWAS's sanctions threat.
"We think that even though it is an unfair challenge that has been imposed on us, we should be able to overcome it. And we will overcome it," he told German broadcaster Deutsche Welle.

The bloc has severed financial transactions and electricity supplies and closed borders with landlocked Niger, blocking much-needed imports to one of the world's poorest countries.
Yesterday, the military leaders said the sanctions make it hard for people to access medicines, food and electricity and describe the punishment as "illegal, inhumane and humiliating."
But Mr Zeine also stressed the importance of Niger's ties with neighbouring Nigeria as well as the West African bloc.
"We have a great interest in preserving this important and historical relationship and also in having ECOWAS work on purely economic issues first," he said.
Unstable
A landlocked nation in the heart of the arid Sahel, Niger is one of the world's poorest and most turbulent countries.
It frequently ranks at the bottom of the Human Development Index, a UN benchmark of prosperity.
Mr Bazoum's election in 2021 marked the first time that the country had experienced a peaceful transition of power since gaining independence from France in 1960.
He survived two attempted coups before being ousted, in the fifth putsch in the country's history.

The international community has rallied behind Mr Bazoum and demanded his reinstatement.
His ousting deals a huge blow to French and US strategy in the Sahel.
France refocussed its anti-jihadist operations on Niger after withdrawing from Mali and Burkina Faso last year following a bust-up with their juntas.
It has around 1,500 troops in Niger, many of them at an air base near Niamey, while the Pentagon has around a thousand military personnel.