The head of Niger's presidential guard, General Abdourahamane Tiani, appeared on Friday on state television as the president of the transitional council that seized power in a coup.
The guard instigated the coup on Wednesday and detained President Mohamed Bazoum in the presidential palace.
A group of soldiers, who later appeared on state television, said they had stripped Bazoum of power.
Colonel Amadou Abdramane, who announced the coup, said the military had acted in response to deteriorating security and bad governance.
Abdourahamane Tiani reiterated that soldiers seized power due to the worsening security. He also criticised the non-cooperation with military governments in Burkina Faso and Mali in the fight against insurgencies in the region.
Insecurity has remained a problem since Bazoum was elected in 2021 as miliants that took root in Mali in 2012 gained ground, killing thousands and displacing over 6 million across the Sahel.
Niger is a key ally of Western countries against insurgencies in West Africa and a number of foreign troops are based there, including French and American.
President Donald Trump said on Friday the US was getting very close to meeting its objectives as it considers winding down its military efforts in the Iran war and called on countries that use the Strait of Hormuz to guard and police it "as necessary".
The Israeli military said early on Saturday it was striking Hezbollah targets in Beirut, after issuing an evacuation warning for seven neighbourhoods in the southern suburbs of the Lebanese capital.
The US military is deploying thousands of Marines to the Middle East, officials told Reuters on Friday, as President Donald Trump accused NATO allies of cowardice over their reluctance to send forces to help open the Strait of Hormuz.
A fire that broke out around lunchtime on Friday at a car parts factory in the South Korean city of Daejeon on Friday, has left 10 people dead, 25 seriously injured and 34 with minor injuries, the country's safety ministry said on Saturday.
The Kuwait Petroleum Corporation (KPC) has announced that the Mina Al-Ahmadi Refinery, operated by Kuwait National Petroleum Company (KNPC), came under drone attacks early on Friday, with a fire breaking out at several units as a result.