The magazine "Newsweek" published a long report, saying that Iran is currently using "drones" to control US military sites and a number of other military and security sites in the Middle East.
The magazine quoted US military personnel in the Middle East: "used force for Iranian foreign operations, what he called the drones suicide."
Military and intelligence officials told Newsweek, who declined to be identified: "US forces are using new technologies to overcome drones, especially those using C4i (control of headquarters, communications and computer) near US positions in the region."
"This activity also indicates that a number of Iranian-friendly regional militias, operating under orders from the Quds Force, are conducting surveys in preparation for future attacks using drones," US officials said.
"These planes have been developed and tested by Tehran since 2014 and can carry explosives over long distances," the sources said.
"These threats from Iran are continuing because Iran is continuing its actions, and US forces are taking all measures to defend themselves, and this is being exercised with caution to avoid provoking or escalating," a senior Pentagon official was quoted as saying.
As Gen. Sean Robertson, a Pentagon spokesman, said: "We continue to monitor the regime's activities closely in Iran, its military and its proxies, and we are well placed to defend US forces and their interests as needed."
A senior Pentagon official said there were signs of possible future hostilities by Iran amid mounting tension between the Islamic Republic and the United States.
John Rudd, the Pentagon's third-ranking official, told reporters the United States had concerns about possible Iranian behavior but did not provide details of the information on which those concerns were based or of any timetable.
According to the network "CNN" American officials at the Pentagon and the US administration revealed the availability of new intelligence on a possible Iranian threat to US forces and interests in the Middle East.
"There has been identical intelligence in the past few weeks," two administration officials said, adding that it had been collected in November by the military and intelligence services.
The officials did not say the nature of the information, but in the past few weeks there have been movements of Iranian forces and weapons that could put US concerns about a possible attack, if ordered by the Iranian regime, officials said.
Gen. Kenneth Mackenzie, commander of US Central Command: "I expect, if we look at the past three or four months, it is likely to do something irresponsible. They could cause damage to their neighbors." "In the long run, it would not be useful for them to choose to work in the military. That is the message we are trying to communicate."
The Pentagon allowed the aircraft carrier Abraham Lincoln to enter the Gulf waters and visit a port in Bahrain during the Thanksgiving holiday, but officials said that given the threat, specific precautions had been taken, although they did not say what those precautions were.
Tensions have surged in the Gulf since a summer attack on oil tankers, including off the coast of the UAE, and a major attack on oil facilities in Saudi Arabia. Washington accuses Iran of responsibility for the attacks, but Iran denies this.