The warning comes two days after Minnesota's state IT agency said more than 30 community water systems in the ‌state were targeted in a "coordinated cyberattack" on July 26 and 27. Advertisement AdvertisementAdvertisement AdvertisementU.S. officials and investigators reviewing the matter say it is likely Iranian-linked hackers are behind the Minnesota attacks, the New York Times reported on Thursday. The White House referred questions about the Minnesota incidents to the FBI. Minnesota IT Services, the information technology agency for the state's executive branch, said in a statement that the investigation into the incidents is ongoing. Most of the confirmed cases involved technology that water systems use to remotely monitor and control equipment, including programmable logic controllers (PLCs), and the computer screens operators use to manage them.