The FBI has assigned its Joint Terrorism Task Force to lead its probe of laser attacks on the cockpits of two planes approaching a New York City airport this week.
It will i nvite help from the public as well spearhead the fight against a growing threat.
The FBI said the first attack occurred when a Shuttle America cockpit was illuminated by a green laser on its final approach to LaGuardia at 7.35pm local time on Tuesday.
It said the crew reported that the laser originated about a half mile west of the New York Botanical Garden in the Bronx.
The second incident occurred three hours later when a private aircraft reported a green laser two miles south-west of LaGuardia.