Investigation Into Letters With Suspicious White Powder Expands Beyond Kansas

TOPEKA – The Kansas Bureau of Investigation (KBI) announced that the investigation into around 100 suspicious letters sent to legislators and public officials has now expanded beyond Kansas, so the FBI will now be the agency leading the investigation.

The KBI will continue to work with all law enforcement partners to bring these incidents to appropriate resolution.

“Our focus remains on ensuring the safety of Kansans, and holding those responsible for these crimes accountable, said KBI Director Tony Mattivi. “The KBI is so appreciative of the incredible coordination and outstanding response by countless federal, state, and local law enforcement agencies, as well as by fire departments, and hazmat teams to this unprecedented event.”

Since the first letters were handled and reported by officials, the KBI had over 60 special agents, forensic scientists and employees devoted to safely collecting or screening evidence, or managing and tracking response to the incidents. Additionally, 17 hazmat teams and 12 bomb squads responded across the state.

It remains important to be vigilant when handling mail. Report any letters containing an unknown white powder to the KBI at 1-800-KSCRIME or the FBI at 1-800-CALL-FBI or

The investigation is ongoing.

Derek Nester
Derek Nester
Derek Nester was born and raised in Blue Rapids and graduated from Valley Heights High School in 2000. He attended Cowley College in Arkansas City and Johnson County Community College in Overland Park studying Journalism & Media Communications. In 2002 Derek joined Taylor Communications, Inc. in Salina, Kansas working in digital media for 550 AM KFRM and 100.9 FM KCLY. Following that stop, he joined Dierking Communications, Inc. stations KNDY AM & FM as a board operator and fill-in sports play-by-play announcer. Starting in 2005 Derek joined the Kansas City Chiefs Radio Network as a Studio Coordinator at 101 The Fox in Kansas City, a role he would serve for 15 years culminating in the Super Bowl LIV Championship game broadcast. In 2020 he moved to Audacy, formerly known as Entercom Communications, Inc. and 106.5 The Wolf and 610 Sports Radio, the new flagship stations of the Kansas City Chiefs Radio Network, the largest radio network in the NFL. Through all of this, Derek continues to serve as the Digital Media Director for Sunflower State Radio, the digital and social media operations of Dierking Communications, Inc. and the 6 radio stations it owns and operates across Kansas.


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