On March 21, 2018, Austin Police and federal law enforcement agencies announced that a primary suspect who is now deceased has been identified and stopped from placing any further improvised explosive devices.
Although it does not appear that any of the improvised explosive devices were sent through the U.S. mail, we remain vigilant. The U.S. Postal Inspection Service continues to assist Austin Police and federal law enforcement partners in the ongoing investigation.
We are continuing to remind our employees and customers to be safe, watchful, and observant regarding the proper identification and disposition of suspicious packages.
The U.S. Postal Service has developed a comprehensive approach to protecting the mailsystem by utilizing a targeted strategy of specialized technology, screening protocols and employee training. The Postal Inspection Service has organized response teams nationwide for investigating suspicious parcels through our Dangerous Mail Investigations (DMI) Program.
DMI Inspectors are trained to recognize the common characteristics of suspicious mail and are highly proficient in the use of state-of-the-art equipment to include portable X-ray machines.
Any reports of suspicious mailings are taken very seriously, as they may impact the safety of postal employees and disrupt the processing of mail. We strive to provide a safe and secure mailsystem, preserve the integrity of the mail, and, most importantly, ensure a safe environment for postal employees, Postal Service customers, and the American public.
In order to prevent attempts to compromise the effectiveness of our investigative methods, the U.S. Postal Inspection Service does not comment publicly on our investigative procedures and operational protocols.
Source: USPS comment on Austin bombings