NEW YORK — The NYPD is investigating disturbing bomb threats emailed to synagogues throughout the city on Christmas Eve Day, though the messages appear to be a hoax, cops said Sunday. Police described the threat as “not credible” but added, “we will continue to deploy resources to houses of worship around the city.” “The NYPD is aware of and actively investigating a number of emails that have been sent to synagogues around the city indicating possible bomb threats. These emails appear to be part of another series of ‘swatting,’ or hoax threats, similar to campaigns that we have seen nationwide...