Police departments in several U.S. cities said on Twitter that local businesses had received a bomb threat in an email demanding payment in bitcoin currency. Among the cities where bomb threats were reported by authorities on official Twitter accounts were New York, Detroit, San Francisco, Oklahoma City, Denver and Raleigh, North Carolina. The spokesman said he did not know whether similar threats and demands had been received elsewhere and was unaware whether any real bombs had been discovered. Police in Madison, Wisconsin, tweeted an image taken of one email threat found to be circulating that said in part: “Good day. A similar wave of emailed hoax bomb threats in December 2015 prompted officials in Los Angeles to close the city’s public school system, a move that national law enforcement officials later criticized as an overreaction.

Source: Huffington Post December 13, 2018 21:22 UTC