DENVER—The U.S. Attorney’s Office for the District of Colorado released the following statement regarding receiving a piece of mail containing white powder:

“The Colorado U.S. Attorney’s Office received a piece of mail that contained a letter and white powder. The piece of mail was opened in the mail room. Once the person who opened the piece of mail determined it contained white powder, he and the office followed its standard protective protocol. The Federal Protective Service, Denver Fire Department, Denver Police Department and the FBI responded. The Denver Fire Department determined on site that the substance contained in the envelope was not hazardous. The piece of mail is now in the custody of the Federal Bureau of Investigation, which is conducting a criminal investigation into the letter. Operations in the U.S. Attorney’s Office were minimally impacted and have since returned back to normal.” 

—Jeff Dorschner, Spokesman, U.S. Attorney’s Office, District of Colorado