On 6 June 2024, French police arrested a 26-year-old Russian-Ukrainian male suspect following an explosion in a hotel room near Charles de Gaulle Airport in Paris. The suspect, who sustained severe burns, claimed to be engaged in the fabrication of homemade batteries for cell phones at the time of the incident. Investigators determined an IED the suspect was constructing had functioned. During a search of his room, investigators discovered evidence of IED manufacture and bomb-making material (BMM), described as triacetone triperoxide (TATP), as well as weapons and false passports.

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.