Nigerian military officials announced Tuesday they had arrested suspects in the kidnapping of more than 200 schoolgirls in mid-April, according to Reuters.

A businessman, believed to be leading an intelligence network for the terrorist group Boko Haram - which kidnapped the girls - was arrested along with two women believe to be involved.

The male suspect had helped Boko Haram plan previous attacks, including the assassination of the Emir of Gwoza, Idrissa Timta, the military said in a statement. The suspect had also coordinated multiple attacks in Maiduguri, Nigeria, since 2011.

One of the women who were also arrested was allegedly coordinating payments to others in the group.

Nigerian defense spokesman Major-General Chris Olukolade said the suspect was part of a pro-government vigilante group, which he used “as a cover, while remaining an active terrorist.”

The schoolgirls, along with additional men, women and children, are still missing.