At approximately 10:00 p.m. on Tuesday, April 4, 2023, the FBI Boston Division was assisting the U.S. Department of Defense in conducting a Department of Defense (DOD) training exercise at a hotel in Boston to simulate a situation their personnel might encounter in a deployed environment. Based on inaccurate information, they were mistakenly sent to the wrong room and detained an individual, not the intended role player. Thankfully nobody was injured. The Boston Police Department was called and responded to the scene to confirm that this was indeed a training exercise. Safety is always a priority of the FBI, and our law enforcement partners, and we take these incidents very seriously. The Boston Division is reviewing the incident with DOD for further action as deemed appropriate.