Arab News said, citing a Monday statement issued by the National Guard High Command that suspected militants on motorbikes ambushed the troops near the western town of Sanam on Sunday.
Sanam is in the Tillaberi tri-border area where Niger meets Mali and Burkina Faso.
On August 9, five soldiers were killed in an attack in the same area, according to the military regime that has been in power since the overthrow of President Mohamed Bazoum on July 26.
AMK/PR