On 16 May 2024, at approximately 1130 hours local time, Pasadena Police Department (PPD) officers arrested a 63-year-old man after connecting him to a vehicle parked near the scene of an explosion. Following the arrest, PPD officers discovered the suspect had allegedly caused more than 150 unidentified explosions over the last 2 years, 14 of which occurring over the previous 2 weeks. Most the explosions occurred around Allen Avenue and Washington Boulevard during the night. No details regarding the devices were released.

On 22 May 2024, the Oxnard Fire Department and Oxnard Police Department (OPD) received a tip from a Ventura County shipping business they had received pyrotechnics from an out-of-state facility. The Ventura County Bomb Squad was called in to assist with the removal and storage of the illegal pyrotechnics weighing 1,497 pounds. OPD identified and arrested the intended recipient of the pyrotechnics, a 47-year-old male who is facing felony charges of possession of dangerous fireworks.

On 13 May 2024, at approximately 2346 hours local time, an unidentified suspect placed and initiated an unspecified explosive device at the door of a private school in the district of El Provenir, Trujillo. The explosive device functioned, causing minor damage to the door and walkway. No injuries were reported. The incident was a part of an ongoing extortionist plot against the school and individuals affiliated with the institution, and this was the fourth time the school had been targeted.

On 14 May 2024, a Colombian National Army press release stated that military personnel discovered an explosive device emplaced on a road in San Jose del Guaviare, Department of Guaviare, ahead of a scheduled visit by the U.S. Ambassador. According to the Colombian National Army following an investigation, it was unlikely that the device was related to the visit and was instead intended to be used against Colombian military personnel. Military bomb technicians rendered the device safe. No further device details have been released.
 

On 10 May 2024, Van Buren Sheriff’s Office deputies responded to a report of an explosive device at a residence on the 50,000 block of Country Road 388 in Columbia Township. While doing yardwork, the homeowner discovered a hand grenade that had been buried in their yard. The Kalamazoo Department of Public Safety Bomb Squad responded to assist and determined that the grenade was a training grenade that had been modified into a live improvised grenade and had been buried for multiple years. Bomb technicians removed the device from the scene and disposed of it.