A Cameroon military operation has killed 100 Boko Haram fighters, freeing 900 hostages, according to officals. Army spokesman Colonel Didier Badjeck said, “In the course of this operation, at least 100 members of Boko Haram were killed. Nine hundred hostages detained by Boko Haram were freed.” The group carried out two suicide bombings on Tuesday night.

Since 2014, Boko Haram have taken control of increasing areas of northern Cameroon, carrying out a string of attacks on locals and security forces. The US have recently sent 300 troops to the West African nation to aid the fight against the insurgency.

Suicide attacks have at times occurred daily in the northern Cameroon region where Boko Haram’s presence has been strengthening. In January, militants carried out a series of raids on villages in the Tourou area, kidnapping dozens of people including 50 children between the ages of 10 and 15. In May, Boko Haram fighters abducted ten Chinese workers from a construction company, and in July 200 fighters attacked the deputy prime minister’s home village.