DURHAM, North Carolina -- The Durham Police Department is investigating a threat at the Lerner Jewish Community Day School on West Cornwallis Road.Video from the scene showed officers using a bomb-sniffing dog while people stood outside the building.The Lerner Jewish Community Day School released a statement Wednesday afternoon. The statement read, in part:The threat comes after eleven Jewish community centers across the country received telephoned bomb threats earlier this week, according to the JCC Association of North America.Like three waves of similar phone calls in January, the new threats proved to be hoaxes, the association said in a statement. In addition, as many as 200 headstones were damaged or tipped over at a Jewish cemetery in suburban St. Louis late Sunday or early Monday.The Islamic Association of Raleigh issued a statement condemning Wednesday's bomb threat:President Donald Trump on Tuesday condemned the threats against Jewish community centers in the U.S. as "painful reminders" of lingering prejudice and evil."The anti-Semitic threats targeting our Jewish community and community centers are horrible and are painful and a very sad reminder of the work that still must be done to root out hate and prejudice and evil," Trump said. He did not outline what that might entail.On Monday, Trump's daughter Ivanka Trump wrote on Twitter, "We must protect our houses of worship & religious centers," and used the hashtag #JCC. She converted to Judaism ahead of her 2009 marriage to Jared Kushner. She joined her father at the African-American museum tour.The FBI said it was joining with the Justice Department's Civil Rights Division to investigate "possible civil rights violations in connection with threats."Ryan Lenz, spokesman for the Southern Poverty Law Center, said it has seen an uptick in incidents since Trump's election. "People are much more willing to express their bigoted selves than they were prior to the election," Lenz said.