On 10 May 2024, Van Buren Sheriff’s Office deputies responded to a report of an explosive device at a residence on the 50,000 block of Country Road 388 in Columbia Township. While doing yardwork, the homeowner discovered a hand grenade that had been buried in their yard. The Kalamazoo Department of Public Safety Bomb Squad responded to assist and determined that the grenade was a training grenade that had been modified into a live improvised grenade and had been buried for multiple years. Bomb technicians removed the device from the scene and disposed of it. 
 

On 14 May 2024, a Michigan man on a motorcycle was followed into Indiana on unrelated warrants by the Michigan State Police Fugitive Apprehension Team and was apprehended at a gas station in Fremont. Police officers found a suspected IED described as a pipe bomb attached to the motorcycle, a stolen handgun, drug paraphernalia, and drugs. Police cordoned off the area, and surrounding businesses were closed. According to authorities, there was no threat to the public as a result of the incident.

On 3 May 2024, at approximately 0500 hours local time, unidentified suspects used explosive devices to attack an ATM at a bank located in Ludwigshafen am Rhein, Rhineland Palatinate, before fleeing the scene. It is unclear if any money was stolen. No injuries were reported, but the blast caused significant damage to the bank. Upon arrival, local police discovered a second explosive device located in the machine. The State Criminal Police Office Bomb Squad responded to assist and removed the second explosive device from the scene before destroying it via a controlled detonation.

On 2 May 2024, Codington County Sheriff’s Office deputies responded to a home on Flyer Drive in Watertown for reports of illegal firearms and discovered IEDs while searching the house. The FBI, ATF, and South Dakota Division of Criminal Investigation responded to assist. No further device details were provided. A 39-year-old male suspect and 28-year-old female suspect were arrested on charges related to explosives, guns, drugs, and the abuse or neglect of a child. A third suspect was arrested on weapons charges.

On 1 May 2024, a joint investigation and operation involving multiple federal, state, and local law enforcement agencies culminated in the search of the Dobbs Ferry residence and two storage lockers of a 61-year-old man who had been convicted on the criminal possession of a weapon in 2001.