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On 31 October 2025, at approximately 1600 hours, a 15-year-old male suspect was arrested in Collier County for allegedly threatening to use a homemade explosive during Halloween trick-or-treating on his social media account. A search of the suspect’s residence by the Collier County Bomb Squad identified bomb-making materials.
On 31 October 2025, Crawford County Sheriff’s Office deputies arrested a 55-year-old male suspect after he barricaded himself in a bedroom during a compliance check in Palestine. During a search of the residence, deputies identified a suspected homemade bomb, bomb-making materials, drugs, and drug paraphernalia.
On 29 October 2025, at around 1100 hours, San Joaquin County Sheriff’s deputies watched two men in an area associated with a recent string of robberies. Deputies detained the two a short distance away near Sierra Nevada and Park Street in Stockton and found that one of them was wearing a bulletproof vest, dropped a firearm during the chase and had an explosive device in his possession. The other had a black crossbody bag with him, which contained a firearm and multiple bags of narcotics.
On 28 October 2025, the Marina Police Department and FBI conducted search warrants at two residences tied to a suspect in Marina and Pacific Grove and discovered: bomb-making materials, two “ghost gun” handguns and two “ghost” AR-15 rifles in the process of being manufactured, firearm parts and a 3d printer, ammunition, and legally purchased firearms. The bomb-making materials were described as chemicals and components to manufacture improvised explosive materials/devices.
On 27 October 2025, in the morning hours, Cal Fire personnel discovered several items, including explosives, while serving a search warrant in East Los Angeles during the investigation of a deadly explosion that occurred on July 1st at a fireworks facility in Esparto, CA.
On 24 October 2025, the North Middleton Police Department, along with Pennsylvania State Police and the FBI, began investigating after a coworker reportedly expressed concerns to police that his colleague was building explosives, according to an affidavit filed Oct. 25.
On 23 October 2025, Caldwell Police Department conducted a search warrant at a residence in Caldwell, and discovered multiple explosive devices, prompting a response from an Explosive Ordnance Disposal (EOD) unit with the National Guard. The devices were determined to be “extremely volatile and unsafe.” The 67-year-old male suspect was also in possession of drugs.
On 22 October 2025, Delaware State Police conducted a welfare check on a 39-year-old male suspect sleeping in his truck in Dover. During the check, they found suspected drugs in plain sight and upon further search found additional suspected drugs and an IED.
On 21 October 2025, at approximately 0945 hours, the Wyoming State Capitol in Cheyenne was evacuated after a concerned citizen found a suspicious package outside the building and brought it inside to a staff member. The Wyoming Highway Patrol and a joint bomb squad comprised of the Laramie County Sheriff’s Office (LCSO) and the Cheyenne Police Department responded with an LCSO K9 unit.
On 21 October 2025, two male suspects were arrested by the Sherburne County Sheriff's Office after they were pulled over following an explosion investigation in Big Lake Township. The suspects claimed they had been throwing fireworks; however, a search of the vehicle uncovered a propane torch and several bags with ingredients the deputy recognized as an explosive mixture.