New Delhi, Aug. 1 -- Investigators are probing whether a wave of cyberattacks targeting water and wastewater utilities across the United States is the work of Iranian hackers, CBS cited US officials and sources familiar with the incident as saying.

While authorities are examining possible Iranian involvement, they cautioned that the attacks have not been definitively attributed and the assessment could change as more technical evidence is collected.

Officials are also investigating whether the attackers deliberately attempted to appear Iran-based to exploit heightened tensions between Washington and Tehran.

The investigation follows a joint public warning issued by the FBI and the Environmental Protection Agency (EPA), which said malic...