Dozens of community centres across America have been evacuated after receiving near-simultaneous bomb threats.
According to JCC Association of North America, 28 centres in 17 states have been threatened.
The news comes just nine days after 16 Jewish institutions across the eastern US were targeted with similar warnings.
Bomb threats were reported at least 15 states: Florida, Florida, Alabama, Tennessee, Massachussets, New Jersey, Connecticut, New York, Michigan, California, Ohio, Maryland, Minnesota, Delaware, Maine and Missouri.