Since Monday, December 8, letters containing a note and suspicious white powder have been received by the offices of more than 40 governors across the country. Additional letters have been received at several U.S. Embassies overseas, said Robert E. Casey, Jr., Special Agent in Charge, Dallas FBI.

The white powder in each of these letters has been field screened and the tests have met with negative results. The powder has been forwarded to local laboratories for further testing. The FBI has contacted the governors’ offices and State Department to be on the lookout for additional letters.

To date, all letters have been postmarked from Texas. These letters are all similar in nature.

Sending a hoax letter is serious and can have severe consequences. This is a great drain on each city’s response teams.

This investigation is being conducted by the Dallas office of the FBI and the United States Postal Inspection Service (USPIS).

Anyone with information on who may be sending these letters is requested to contact the FBI, USPIS, or local law enforcement.

If you receive a letter, please notify the FBI and your local authorities. Information on how to handle a suspicious package can be found on www.fbi.gov