The police said after officers interviewed the hotel clerk, they concluded there had been a “clear miscommunication” with her relatives, and that Mr. Menhali had not made “any statements related to ISIS.” The police said the episode was being investigated, and the findings would be forwarded to the prosecutor’s office for review.

Julia A. Shearson, the executive director of the Cleveland chapter of the Council on American-Islamic Relations, said in an interview Sunday: “It is shocking this happened. The bottom line is we understand the American people are on edge, and there’s definitely violence in the world, but we’ve come to this brute level of giving in to our fears.”

Ms. Shearson also told The Independent that the way the police referred to Mr. Menhali’s clothing in their report — “as a criminal indicator” — was “very concerning.”

In a statement Monday, Marriott International, which owns the Fairfield Inn and Suites, said that it “deeply regret” what happened to Mr. Menhali. The company said it planned to discuss with the hotel “diversity and inclusion training designed to help prevent this type of situation.”

Avon officials apologized to Mr. Menhali Saturday night at the council’s Cleveland office. The mayor, Bryan K. Jensen, told Mr. Menhali, “There were some false accusations made against you, and those are regrettable.” The chief of the Avon police, Richard Bosley, said, “You should not have been put in that situation like you were.”