A Michigan defense lawyer is disputing FBI allegations that his 20-year-old client and four other young suspects were planning to carry out a terror attack on Halloween weekend.

Authorities with the FBI and in Michigan have offered few details about the case, however as he announced the arrests on Friday, FBI Director Kash Patel said more information would be released. Spokespersons for the state and national FBI and the U.S. Attorney in Detroit did not immediately respond to messages Saturday.