On 2 June 2024, at approximately 1045 hours local time, San Mateo Police Department officers responded to a home on the 300 block of North Grant Street after receiving reports of a disturbance involving a couple sitting in a vehicle near the home. Officers searched the vehicle and discovered pyrotechnics and marijuana. A subsequent search of the home found 140 lbs. of pyrotechnics, 9 lbs. of marijuana, methamphetamine and an unregistered pistol with a silencer and ammunition.

On 30 May 2024, El Salvador’s National Police arrested seven suspects who had been involved in the nation’s 1980-1992 civil war after IEDs described as “small cylinders of explosives with fuses” and sacks of ammonium nitrate were found during a raid on a former rebel territory. The police posted images of the seized explosives to social media, alongside a note that the plot was intended to target gas stations, supermarkets, and government buildings. The suspects were arrested prior to the President’s inauguration on 1 June. 

On 5 June 2024, at approximately 1300 hours local time, Henry County Sheriff's Department (HCSD) deputies, Tennessee Bureau of Investigation special agents and the ATF arrested a 53-year-old male suspect after discovering an IED while searching his Buchanan residence. HCSD deputies initially responded to a 911 call made by the suspect reporting a drug overdose. Upon arrival, deputies discovered an IED described as a PVC pipe with black wires taped to it on the home's front porch.

On 27 April 2024, Onondaga County Sheriff’s Office deputies discovered that an incendiary device had damaged a mailbox after responding to reports of a loud noise at a residence in Salina. No injuries were reported, and no further device details were provided. An investigation found that the incident stemmed from a previous dispute. On 30 May 2024, two male suspects, ages 19 and 21, were arrested and charged with felony criminal possession of a weapon, possession of an explosive device with intent, and misdemeanor criminal mischief.

On 29 May 2024, at approximately 1900 hours local time, Los Angeles Police Department (LAPD) officers executing a search warrant discovered 2,000 lb of pyrotechnics while searching the garage of a home in the 1600 block of West 146th Street. LAPD Bomb Squad technicians responded to assist and removed the pyrotechnics. No injuries were reported.