The Boston Police Department is asking for the public's help in identifying a man in connection with a fire that was set inside a ballot drop box in the city. Secretary of the Commonwealth William Galvin contacted U.S. Attorney Andrew Lelling's office after he was notified of the incident Sunday morning. He is also calling on the FBI to investigate what appears to be a deliberate attack. The Boston Elections Department notified Galvin's office that the fire was set at about 4 a.m. in the ballot drop box outside of the Boston Public Library's main branch in Copley Square. Boston police said officers responded at 4:11 a.m. to the area of 700 Boylston St., which is the location of the library's main branch. When they arrived at the scene, the officers saw Boston firefighters tending to smoke coming from the ballot box.