The American government has a particular interest in supporting the battle against Boko Haram, which has factions that take orders from the Islamic State. The United States has for years stood by Cameroon in the fight, providing training and military equipment to the nation, as well as to bordering countries. American officials say they have no indication that Cameroon is using the provided equipment outside the Boko Haram war zone in the north.

The suspended delivery of equipment includes four defender boats, nine armored vehicles, a radar system and an upgrade of a Cessna aircraft belonging to Cameroon’s special forces unit, the Rapid Intervention Battalion.

Training and spare parts for a Cameroonian C-130 aircraft and training for a helicopter have also been suspended, and the United States has withdrawn an offer for Cameroon to participate in the State Partnership Program, which pairs nations with various United States National Guard units for training.

Cameroonian officials did not return repeated requests for comment.

Last year, the Cameroon government arrested soldiers after a video was circulated showing forces shooting to death two women, an infant strapped to the back of one of the women, and another child. The video most likely was filmed about five years ago in the north, where Boko Haram operates, when violence was spiking there.

Other troubling videos have surfaced showing soldiers deployed to the Boko Haram battlefield committing abuses.

Separately, Cameroon’s fight against Anglophone separatists, who want to form their own nation called Ambazonia, has produced a stream of allegations of abuses. People living in the English-speaking regions have complained of horrific acts of violence carried out by security forces in a heavy-handed response to a ragtag group of separatists.