A Butler County man who was arrested on terrorism charges has pleaded guilty to planning the kidnapping and execution of a U.S. military employee and an attack on a police station.

Prosecutors released previously sealed documents, including a plea agreement, on Thursday that detail the national-security case against Munir Abdulkader, 21, of West Chester.

The FBI Joint Terrorism Task Force arrested Abdulkader on May 21, 2015 after he purchased an AK-47, ending the task force’s two-year surveillance of him.

Unsealed court documents and the FBI gave this detailed account of Abdulkader’s case:

A native of Eritrea in east Africa, Abdulkader became a citizen of the United States in September 2006. He was a college student at a Xavier University in Cincinnati when he came onto the FBI’s radar after writing Twitter posts seen as sympathetic to Daesh fighters.

On a Twitter account that began in July 2014 and continued into 2015, Abdulkader posted a Daesh training video, lamented that his cousin had died fighting for Daesh and expressed his desire to travel and join the terrorist insurgency.

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Abdulkader also stated his wish to attain martyrdom.

From March to mid-April 2015, Abdulkader began speaking with a confidential source about his intentions to travel to Syria and fight for the insurgency. He secured a passport, saved money for the trip and began making travel plans, but postponed the trip until May 2015 because of increased arrests of individuals traveling to join Daesh.

Read More: The Columbus Dispatch

Featured Image – Munir Abdulkader, Ohio DoJ