The St. Louis Jewish Community Center was evacuated Wednesday morning after a bomb threat.
Officials say it's the latest in a slew of 25 similar threats against Jewish community centers nationwide.
Police said the threat came in around 10 a.m. at the community center on Millstone Campus Drive.
Nothing was found in a search of the building or nearby area by St. Louis County Police bomb-sniffing dogs. The all-clear was issued before 1 p.m.
A brief FBI statement Wednesday says it and the Justice Department's civil-rights division are investigating "possible civil rights violations in connection with threats." The statement from the agency's Washington headquarters doesn't characterize the threats.
But the Anti-Defamation League the same day issued a statement citing "a series of bomb threats to Jewish community centers in at least 17 states."
The ADL's Jonathan Greenblatt adds about actual explosives that "so far these threats do not appear to be credible." But the statement says centers should still take them seriously.
The ADL says it's received reports of threats in New York, New Jersey, Ohio, Florida, Massachusetts, Maryland, Michigan, Minnesota, Delaware, Connecticut, Alabama, California, Maine, Tennessee, South Carolina, Missouri, Texas and Kansas.
The Associated Press contributed to this story.