LAGOS, Nigeria (AP) — A joint operation against Islamic State fighters by Nigeria and the United States has killed 175 of the fighters over the past few days, the Nigerian military said Tuesday.

Military spokesperson Samaila Uba said in a statement that the strikes also destroyed weapons, checkpoints and financial networks of the militants across the northeastern region of the country.

The gains against the militants followed the killing late last week of the group's local chapter deputy, Abu Bakr al-Mainuki, in the first successful targeting of a senior militant in more than a decade of insurgency in the country.

The Nigerian military on Tuesday reported the killing of another senior leader, Abd-al Wahhab responsible for coordinating finance and attack planning and logistics.

The U.S. Africa Command confirmed the attacks, saying no U.S. or Nigerian troops were harmed.

In February, the U.S. sent troops to Nigeria in what was deemed a mostly advisory and training role, but the joint operation in recent days signals more active U.S. involvement.