The Federal Bureau of Investigation has served subpoenas on the City of Lynn Haven. The subpoenas requested any and all paperwork related to former City Manager Michael White and two Bay County businesses.    Two other subpoenas were served related to city business with Erosion Care Specialists and Greenleaf Lawn Care. White was arrested for aggravated assault with a deadly weapon on March 17th for a domestic violence incident during which he pointed a firearm at his wife. He was suspended with pay by the City Council and later resigned.