Federal authorities are investigating a potential threat of drone attacks targeting California, stemming from escalating tensions with Iran. The FBI recently issued a warning to California law enforcement agencies regarding a possible retaliatory strike using unmanned aerial vehicles (UAVs), according to an alert reviewed by multiple sources. This alert comes amid ongoing U.S. Military operations against Iran and subsequent retaliatory drone strikes by Iran in the Middle East.
The FBI warning, distributed in late February 2026, indicated that Iran allegedly “aspired to conduct a surprise attack” using drones launched from an unidentified vessel off the U.S. Coastline. The potential targets within California remain unspecified, and the alert contained no information regarding the timing, method, or perpetrators of the alleged attack. The alert was triggered by intelligence suggesting Iran’s intent in the event of further U.S. Strikes within its borders. This intelligence underscores the growing concern over Iran’s capabilities and willingness to project force beyond the Middle East.
Expanding Drone Threat Landscape
The potential for a drone attack on U.S. Soil is not limited to state-sponsored actors. U.S. Intelligence officials have also expressed increasing concern about the proliferation of drone technology among Mexican drug cartels. A September 2025 bulletin highlighted an uncorroborated report suggesting cartel leaders authorized attacks using drones carrying explosives against U.S. Law enforcement and military personnel along the U.S.-Mexico border. While such an attack would be unprecedented, authorities acknowledge it as a plausible scenario, despite cartels typically avoiding actions that would draw significant attention from U.S. Authorities.
John Cohen, a former head of intelligence for the Department of Homeland Security, emphasized the seriousness of the situation. “We know Iran has an extensive presence in Mexico and South America, they have relationships, they have the drones and now they have the incentive to conduct attacks,” Cohen stated. He added that the FBI’s decision to issue the warning to state and local law enforcement is a prudent step, enabling better preparation and response capabilities. The FBI’s counterterrorism and counterintelligence teams have been placed on elevated alert status nationwide in response to the escalating tensions.
Recent Enforcement Actions and Iranian Activity
Recent law enforcement activity highlights the ongoing concerns regarding Iranian nationals and potential security threats within the United States. In late June 2025, Customs and Border Protection (CBP) raided a Los Angeles residence used to harbor Iranian illegal aliens with ties to terrorism, resulting in the arrest of two individuals. This followed a previous operation at the same location that led to the arrest of seven Iranian nationals, some of whom were on the FBI terror watch list and linked to an Iranian human smuggling network.
The arrests occurred in the wake of U.S. Bombing campaigns targeting Iran’s nuclear production sites, prompting a wave of enforcement actions against Iranian nationals illegally present in the U.S. Approximately 130 Iranians were arrested in the week following the strikes, with 670 currently held in ICE detention centers. Among those arrested were individuals with prior military experience, including a former sniper in the Iranian military and a member of the Islamic Revolutionary Guard Corps.
FBI Counterintelligence Operations
The timing of these alerts and enforcement actions coincides with a period of internal upheaval within the FBI. Earlier in 2026, FBI Director Kash Patel fired multiple agents assigned to counterintelligence cases, including those involving Iran, raising concerns about the bureau’s capacity to address these threats. Despite these personnel changes, the FBI maintains it has a “robust counterintelligence operation” and achieved a 35% increase in counterintelligence arrests in 2025.
The FBI has not commented on the specific details of the California drone threat, and the White House has not yet responded to requests for comment. However, the intelligence community remains focused on the possibility of Iran attempting to project power and retaliate for U.S. Actions, both directly and through proxies.
As the situation continues to evolve, authorities will likely remain on high alert for potential threats, both from state-sponsored actors and non-state groups. The FBI’s warning serves as a reminder of the complex and multifaceted nature of the security challenges facing the United States. The coming weeks will be critical in assessing the credibility of the threat and implementing appropriate countermeasures to protect critical infrastructure and the American public.
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