This Alert discusses the potential hazards of anhydrous ammonia releases caused by theft, steps facilities can take to prevent theft and how to minimize health and safety risks associated with accidental releases. This Alert should be read by individuals who operate and maintain agricultural retail operations, facilities with ammonia refrigeration systems and farmers who apply anhydrous ammonia as a fertilizer. Furthermore, this Alert should be reviewed by law enforcement personnel, emergency responders and members of Local Emergency Planning Committees (LEPCs).