West African leaders have condemned the military authorities in Niger’s attempt to charge ousted President Mohamed Bazoum for high treason.

In a press statement dated August 14, the Economic Community of West African States (ECOWAS) noted that this new move goes against the reported claims of the junta’s willingness to restore constitutional rule in Niger through peaceful means.

Calling this a provocation, the regional bloc noted that “President Bazoum remains the democratically elected President of the Republic of Niger recognised by ECOWAS and the international community.”

“ECOWAS condemns his illegal detention and calls for his immediate release and reinstatement,” parts of the statement read.

This comes after Niger's military junta announced plans to prosecute deposed President Mohamed Bazoum for high treason and undermining national security.

The junta said in a statement read out on state TV that it had gathered evidence to prosecute "the deposed president and his local and foreign accomplices for high treason and undermining the internal and external security of Niger".

It did not give further details. This is the latest sign that the junta intends to resist international pressure to return power to Mr Bazoum.

Mr Bazoum, 63, is being held captive with his wife and son. He has been held in the basement of his palace since the military staged a coup about three weeks ago.

Gen Abdourahmane Tchiani, the head of the presidential guards unit, declared himself Niger's new ruler on 26 July after overthrowing him.

Meanwhile, ECOWAS has threatened military action to reverse the coup, but it has so far failed to follow through on its threat.

The coup leaders have warned they will defend themselves against any intervention. ECOWAS has also imposed sanctions on the junta, including cutting electricity to Niger. 

Read the full statement below: