News Officials say threat against de Blasio and city schools is 'non-credible' New York City Mayor Bill de Blasio delivers his State of the City address at Baruch College on Feb. 3, 2015 in New York City. Photo Credit: Getty Images / Andrew Burton By Maria Alvarez Special to Newsday Updated January 22, 2016 9:12 PM Print Share fbShare Tweet gShare Email A new email threat made against Mayor Bill de Blasio and New York City schools received Thursday night is “non-credible’’ NYPD officials said. “There is no substance whatsoever. We knocked it down as fast as we got it,’’ said Police Commissioner William Bratton at a Brooklyn news conference Friday afternoon. Several private schools also received the same threatening email. Police officials would not elaborate on the contents of the threats. John Miller, Deputy Commissioner of Intelligence and Counter-terrorism, said the emails resembled the same one issued in December which triggered Los Angeles City officials to shut down their schools. The same email threat was made to New York, but officials here deemed it also “non-credible’’ and schools remained open. “It’s a re-run from the same authors or authors... It’s people who enjoy watching others jump through loops,’’ said Miller. He said the email threat is on the same level as that of pulling a fire alarm or calling in a bomb scare. The “annoyance letters” said Miller are being investigated by the FBI, which also disclosed that a new email address was used with the new email threat. “The FBI has a lead on it,” said Miller. By Maria Alvarez Special to Newsday Share on Facebook Share on Twitter More on this topic Dante goes to college and more de Blasio family photosDante de Blasio is off to Yale. Comments We're revamping our Comments section. Learn more and share your input.