Trenton: On 9 May 2026, at approximately 0935, the Maine State Police, State Fire Marshal’s Office, Maine State Police Bomb Squad, Hancock County Sheriff’s Office, Bar Harbor Police Department, and local fire and rescue personnel recovered improvised explosive devices (IEDs) at the home of a 43‑year‑old male suspect on Bar Harbor Road in Trenton, ME. Police had responded to a domestic violence call involving the suspect, and the reported victim informed officers that the suspect had departed the residence and might be in possession of hazardous explosive items.

Bullhead City: On 7 May 2026, around 0530 local time, the Bullhead City Police Department (BPD) served a search warrant at a residence on Church Street in Bullhead City, AZ. The suspect, a 23‑year‑old male, was under investigation after commenting that he desired to make an explosive, among other alleged crimes including hiding firearms and drugs. The search was supported by the BPD Bomb Squad and K9 units from Las Vegas Fire and Rescue and the Burlington Northern and Santa Fe Railway Police. Police recovered an explosive device, bomb‑making materials, and cocaine.

Effingham: On 6 May 2026, in the morning hours, the Florence County Law Enforcement Complex on Friendfield Road in Effingham, SC, was evacuated after a pipe bomb was discovered in the forensic room of the Florence County Sheriff’s Office. The pipe bomb had arrived in a package of seized evidence turned in by an evidence technician. The South Carolina Law Enforcement Division’s ordnance squad safely removed and rendered the device safe. Police arrested a 33‑year‑old male suspect for possessing or making an explosive device.

Portland: On 2 May 2026, around 0300 local time, Portland Police Bureau officers and the fire department responded to a car crash at the Multnomah Athletic Club on Southwest Salmon Street in Portland, OR. The driver, an alleged 49‑year‑old disgruntled former employee, crashed into the club with a car containing explosives. Investigators believe the driver set off explosive devices, which were thought to include a mix of propane tanks and pipe bombs.

Hudson: On 1 May 2026, around 1300 local time, the Hudson Police Department began an investigation into a bomb threat at the Walmart on Hickory Boulevard in Hudson, NC. A 24‑year‑old male suspect called 911 claiming he saw a man with a grenade walk into the Walmart. Police located the suspect, and when approached, he removed a grenade from his pocket. Police cordoned off the area and evacuated the store. A standoff ensued and ended when officers determined the grenade was fake.