CINCINNATI, OH (FOX19) - The Cincinnati office of the FBI is investigating a possible link between threatening letters sent to four local daycare centers and letters sent to two local airports.
Four Kinder Care Daycare centers have been sent threatening letters in the past month. The Cincinnati and Dayton airports have also received similar threatening letters. All six of the letters indicated everyone would die of a "9/11 style" attack.
The FBI is not saying what that link might be.
The most recent letter arrived Thursday at the Kinder Care in Middletown. The CVG and Dayton airports received their letters three weeks ago.