Suspicious Powder Found in Mass. Eight Police Departments North of Boston Receive Envelopes Containing Unidentified White Powder The Associated Press B O S T O N, Sept. 4 — Eight police departments in towns north of Boston received envelopes Wednesday containing an unidentified white powder, authorities said. "They came in regular mail, I don't if there was anything with them," said Jennifer Mieth, a spokeswoman for the state department of fire services, which was coordinating the response.State police identified the towns as Hamilton, Peabody, Salem, Middleton, Topsfield, Marblehead, Wenham and Lynnfield."We've sent HAZMAT teams to respond," Miethe said. "Police...