Mlive reports here:
A 21-year-old man charged in federal court with illegal firearm and drug possession is also accused of making threats and planning a terrorist attack on a church congregation.
Khalil Abu-Rayyan has not been charged with crimes directly related terrorism, but the complaint filed against him in Detroit federal court includes allegations of threats made to a Detroit church and a Dearborn police officer.
The FBI has been watching Abu-Rayyan, of Dearborn Heights, since May 2015, because of what federal agents called "increasingly violent threats he has made to others about committing acts of terror and martyrdom -- including brutal acts against police officers, churchgoers and others -- on behalf of the foreign terrorist organization Islamic State of Iraq and Levant."