A United Airlines flight from Chicago to Minneapolis diverted to Madison, Wisconsin, on Friday night after an “unruly passenger” caused a security concern on board, the airline said. Air traffic control audio reviewed by CNN captured crew members of United flight 2005 describing a passenger who had made “multiple attempts to try to breach the cockpit” before law enforcement officers on board were able to restrain him. After the plane landed in Madison, the passenger was detained by local authorities, FBI spokesperson Caroline Clancy said in a statement to CNN. Federal agents and law enforcement officers responded to the airport, but officials have not disclosed the passenger’s identity, whether any charges have been filed or what specific actions led to the detention.