On 24 September 2024, at approximately 1500 hours local time, Barton County Sheriff’s Office (BCSO) deputies discovered an unspecified explosive device in a vehicle during a traffic stop at the intersection of Hicks Avenue and Main Street in Golden City. The Golden City Fire Department helped BCSO evacuate the surrounding area while the Springfield Fire Department Bomb Squad was called in for assistance. Bomb squad technicians x-rayed the device, confirmed it was explosive in nature, and rendered the device safe without incident. The driver was arrested at the scene.
 

On 22 September 2024, Connersville Police Department (CPD) officers responded to Ohio Avenue in Connersville for reports of a gunshot being fired into an unoccupied vehicle. After interviewing neighbors about the incident, police identified a 49-year-old male suspect and went to his residence, where they located a vehicle believed to be involved in the shooting. CPD officers were granted a search warrant for the residence, where they found five suspected IEDs.

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.