On 8 June 2024, police responded to the 2100 block of Rollingridge Lane in Green Township after a suspect functioned homemade pyrotechnics, damaging a home and truck. The suspect admitted to using a mixture of potassium chlorate and other chemicals purchased online to manufacture the explosive mixture, which he placed in a log. The 18-year-old suspect claimed he was trying to build his own firework. He was arrested and charged with unlawful possession of dangerous ordnance and criminal damaging and endangering.
 

On 12 June 2024, at approximately 0300 hours local time, Wicomico County Sheriff’s Office deputies responded to the 1000 block of Tuscola Avenue and 800 block of Oneida Avenue for reports of attempted arsons at four homes. Sheriff’s deputies requested the assistance of the Fire Marshal’s Office, and investigators discovered four IIDs emplaced at the front doors of the residences. Security footage captured two male suspects emplacing the IIDs, described as Molotov cocktails, before fleeing the scene.

On 6 June 2024, at approximately 1230 hours local time, Arapahoe County Sheriff's Office (ACSO) Bomb Squad technicians responded to the Cherry Creek Dam Spillway in Cherry Creek State Park in Aurora for potential explosive devices. At approximately 1400 hours local time, bomb technicians discovered two IEDs. Per a picture from ACSO, one IED was cylindrical in shape and wrapped with red tape on one half and black on the other. The other IED pictured was cylindrical, wrapped in black tape, and capped on both ends. ACSO described the devices as similar in appearance to homemade pyrotechnics.

On 5 June 2024, at approximately 0915 hours local time, Ventura County Sheriff’s Office deputies responded to Rio Mesa High School after two students functioned an improvised incendiary device (IID) at the school. The students ignited a small aerosol can inside a trashcan, injuring one staff member. The 16-year-old male students were arrested on possession of a destructive device, explosive with intent to injure/intimidate, and arson of property, among other charges.
 

On 8 June 2024, Mesa Police Department (MPD) officers discovered several boxes with more than 50 illegal pyrotechnics during a vehicle traffic stop. The two occupants of the vehicle, a 47-year-old man and a 22-year-old man, allegedly planned to resell the fireworks in Mesa. They were arrested and charged with possession of illegal fireworks and illegal fireworks for sale. Hours later, MPD officers conducted a separate traffic stop of a 27-year-old male driver and discovered similar boxes of illegal pyrotechnics.