GPS tracker, pipe bombs, ghost gun found in Lenexa shooting


LENEXA, Kan. – Crime scene technicians found pipe bombs and a GPS tracking device in a car parked outside the scene of a double murder-suicide in Lenexa, according to a search warrant/affidavit request in the case. They also found a “ghost gun” and other weapons inside the home, according to FOX4 court documents obtained Wednesday.

Investigators said John M. Williamson, 20, of Lenexa, Kansas; and Sara M. Beck, 22, and Dustin J. Johnson, 37, of Belton died in the shooting early Sunday morning.

Police believe Johnson shot and killed Beck, his ex-girlfriend, and Williamson, who were “seeing each other”. Johnson then died by suicide.

According to recently released court documents, Johnson was found wearing a tactical vest and had an empty holster attached to his belt. He also had an extra holster that held a silver revolver in his boot.

Detectives also found a black assault rifle near Johnson. The affidavit indicates that the weapon was fabricated from various parts and turned into a complete assault weapon. There was no serial number on the firearm.

A car registered to Johnson was found in the driveway outside the Lenexa home. He was towed to Johnson County Crime Lab for processing.

The lab told detectives Monday they found a GPS tracking device outside the car and four pipe bombs inside, according to court documents.

The Olathe Fire Department reported that the devices appeared to be an improvised delay grenade. The Olathe Bomb Unit said the explosives were not made at the crime scene.

Detectives used that information to seek a search warrant at the Belton duplex where Johnson lived on Tuesday afternoon.

The affidavit shows that officers were looking for evidence of explosives or that an explosive device had been made at the duplex. They also searched for a variety of guns and weapons, or evidence thereof.

Lenexa police said they believe Johnson was using the tracking device they found in his car to keep tabs on his ex-girlfriend. Detectives are still investigating why the tracker was found in his car.

📲 Download the FOX4 News app to stay informed on the go.
📧 Sign up for FOX4 email alerts to get the latest news delivered to your inbox.
💻 Find today’s top stories at for Kansas City and all of Kansas and Missouri.


About Author

Comments are closed.