Threatening note grounded Miami-Boston flight

A plane flying from Miami to Boston was in the air only 45 minutes before turning around and heading back to its starting point. American Airlines Flight 1640 returned to Miami because a threatening note was found in one of the lavatories, stating that an explosive device might be on the plane.

The flight’s 168 passengers and crew members left exited safely, and the plane was searched. American Airlines spokesman Billy Saenz wouldn’t comment on whether anything was found. Because of the incident, the passengers stayed overnight in Miami and were scheduled to depart for Boston on Thursday morning. The threat is still being investigated.