On 25 September 2024, at approximately 0850 hours local time, Santa Barbara County Sheriff’s Office, Santa Maria Police, Santa Maria Fire, California Highway Patrol, Santa Barbara County Fire Department, and bomb squad technicians responded to the Santa Maria Superior Court Complex on Cook Street after a suspect functioned an IED outside the Department 9 room of the courthouse. According to media reporting, the suspect tossed a backpack containing the IED past a security station inside the courthouse, injuring six individuals before fleeing the scene.

On 19 September 2024, at approximately 0600 hours local time, the Roseville Police Department responded to the intersection of Circuit Dr and Church St for reports of a vandalized vehicle and discovered the remains of an unspecified explosive device, which shattered the vehicle's windows. No injuries were reported. Investigators determined the explosive device was intentionally placed in the vehicle, but no motive was identified. No further device-related details were provided. The investigation is ongoing.
 

On 16 September 2024, at approximately 0550 hours local time, an explosion was reported outside of a nightclub in the Hohenzollernring area in Cologne. The explosion left one person with minor injuries and caused material damage to the front of the building. North Rhine-Westphalia state police officers responded to the scene to assist. Investigators obtained surveillance camera footage showing a hooded man emplacing either a bag or sack in front of the club and lighting it on fire. The man fled the scene, and a bright flash of light was recorded when the explosive device functioned.

On 12 September 2024, at approximately 0830 hours local time, Vermont State Police (VSP) received a report of vandalism at a residence on Georgia Shore Road in the town of Georgia. Neighbors told VSP troopers that they heard an explosion on 10 September at approximately 2030 hours. According to VSP, an unspecified explosive device functioned and destroyed a mailbox. No further device details were provided. The investigation is ongoing. 

On 13 September 2024, Davidson County Sheriff’s Office deputies discovered five unspecified explosive devices and unsecured firearms while searching a residence on the 4400 block of Holloway Church Road in Lexington after child abuse was reported at the home. Winston-Salem Bomb Squad technicians and ATF personnel responded to assist and rendered the devices safe. A 42-year-old male suspect was arrested and charged with possession of a firearm by a convicted felon and possession of a weapon of mass death and destruction.