Two American brothers have been arrested in Tunisia on suspicion of belonging to a terrorist organization, two local sources told NBC News.  A senior police official said the brothers were both aged in their 30s and originally from Michigan. A source in the governor's office also confirmed the arrests.

Speaking on condition of anonymity, the police source said one of the men was carrying a U.S. passport that identified him as Patrick Alan Lawwill. NBC News has seen a photocopy of the passport, which was apparently issued in July 2015 and lists Lawwill's place of birth as Michigan.  Police were not able to provide a copy of the second suspect's documents.

Read more: NBC News