The Anti-Defamation League welcomed the arrest of a St. Louis man in connection with a bomb threat against its headquarters in New York and threats against at least eight other Jewish institutions across the United States. According to a complaint unsealed this morning in Manhattan federal court, Juan Thompson, 31, of St. Louis, Missouri, is alleged to have made at least eight of the threats against JCCs in January and February as part of a sustained campaign to harass and intimidate a former girlfriend.