Boko Haram retook the town of Bosso in southeastern Niger overnight after clashes with soldiers from Niger and Nigeria, the mayor of Bosso and a military source said on Monday.
The Islamist group first took the town near the Nigerian border on Friday in an attack in which 30 soldiers from Niger and two from Nigeria were killed.
Nigerien troops had retaken the town by Saturday morning, the defense ministry said.
It was the deadliest attack carried out in Niger by the Islamist group since April 2015, when at least 74 people, including 28 civilians, were killed at the Lake Chad Island of Karamga.
“The counter-offensive conducted on Monday morning helped to retake control of all the positions in the city of Bosso.
The situation is under control,” the defense ministry said in a statement. “A sweep is ongoing in the area with the mobilisation of all land and air means”.