Jeff Sessions
Jeff SessionsReuters

Executives from 141 Jewish community centers on Wednesday sent a letter to Attorney General Jeff Sessions in which they expressed their frustration with the efforts to combat a rash of bomb threats, JTA reported.

The letter, sent by the JCC Association of North America, the national organization of Jewish community centers, requested a meeting with Sessions and urged the Justice Department to do more to stop the threats.

On Wednesday, bomb threats were emailed to four Jewish community centers in Colorado, Delaware, Connecticut, and western Canada.

Those emails came a day after a wave of threats targeted 16 Jewish institutions.

The threats to the JCCs continue even after the FBI last week arrested a man in St Louis suspected of being behind at least eight of more than 100 threats made in recent weeks to Jewish schools, community centers and other institutions.

The man, Juan Thompson, who was believed to have made the threats to avenge a former romantic partner, appears to have been a copycat.

Wednesday’s letter to Sessions praised local law enforcement’s response to the incidents and recognized President Donald Trump’s condemnation of them.

“Still, we are frustrated with the progress in resolving this situation,” the letter said, according to JTA. “We insist that all relevant federal agencies, including your own, apply all the resources available to identify and bring the perpetrator or perpetrators, who are trying to instill anxiety and fear in communities across the country, to justice.”

The Department of Homeland Security has made its regional experts available to JCCs, and leaders of major Jewish groups met with FBI Director James Comey last week. Local JCC directors have repeatedly praised the response of area law enforcement.

“Local law enforcement have represented a beacon of responsiveness and professionalism as our communities have endured dozens of anti-Semitic threats in past weeks,” the letter said. “We respectfully ask that federal agencies, including your own, do the same.”