A young boy required open heart surgery after multiple drones at a holiday show in Orlando, Florida, unexpectedly fell from the sky. The Federal Aviation Administration is now investigating. Adriana Edgerton,

The 7-year-old underwent emergency open-heart surgery after one of several drones that fell from the sky and struck him in the chest and mouth.

The halt in using drones follows last Saturday’s accident when drones fell into a crowd of thousands of people watching a holiday show at Lake Eola Park in downtown Orlando. A 7-year-old boy was hit in the chest by a drone and required heart surgery, according to his mother.