IX: AZ, CA, HI, NV, Pacific Territories

On 11 August 2024, at approximately 0129 hours local time, Merced Police Department (MPD) officers responded to a reported explosion in the 700 block of Sunol Court but could not locate the site of the explosion. After examining video evidence, officers identified the site, as well as the Sacramento residence of a 24-year-old male suspect. MPD Bomb Squad technicians responded to the residence and found additional evidence on the suspect before arresting him. No further device-related details were provided. 

On the evening of 8 August 2024, an IED that had been emplaced in a trash can on the side of Old Haleakala Highway in Makawao, Maui, functioned, striking a passing vehicle and damaging it, as well as injuring the driver. According to the FBI and Maui Police Department (MPD), the incident is connected to the recent discovery of multiple similar IEDs emplaced in trash cans along roadways between Kahului and Kula.

On 20 June 2024, the Riverside Police Department, Riverside Fire Department Arson Investigations Unit, and State Fire Marshal’s Office agents discovered approximately 1,000 lb of pyrotechnics and 100 M-80 explosive devices while searching a residential property in the 5800 block of Clifton Avenue in Riverside. The bulk of the explosives were found on the backyard patio. A 23-year-old male suspect was arrested on suspicion of possession of destructive devices, possession of unlicensed pyrotechnics, possession of an illicit firearm, and child endangerment.

On 3 July 2024, detectives with the Kern County Sheriff's Office (KCSO) Rural Crime Investigation Unit discovered multiple IEDs, including one described as a pipe bomb, as well as bomb-making material (BMM), copper wiring, and tools for electrical wire theft while searching a home in the 8200 block of Halleluiah Street in southeast Bakersfield. Two male suspects, ages 26 and 32, and a 53-year-old female suspect were arrested. The Kern County High Intensity Drug Trafficking Area Task Force, Kern County Probation Department, and KCSO Lamont Substation assisted with the incident.

On 4 July 2024, at approximately 2100 hours local time, in a neighborhood near Heartland Drive and Tetotom Park Way in Antelope, several juveniles threw improvised incendiary devices (IID) described as Molotov cocktails and launched pyrotechnics described as aerial and mortar pyrotechnics into oncoming traffic. The suspects fled when the Sacramento County Sheriff’s Office (SCSO) responded to the scene. SCSO deputies detained several suspects, one of whom was found in possession of a handgun and was subsequently arrested.