(Saginaw, MI) -- A suspicious letter was delivered to the office of U.S. Senator Carl Levin in Saginaw this morning prompting the evacuation of the office. A hazardous materials crew was called to the building on Washington Street around 11:30 today and immediately cleared to the office. A worker who came in contact with the letter was taken to a local hospital, but their condition is not known. The Senator has seven offices in Michigan.