U.S. Army is considering sending THAAD air defense missile system to the Middle East.

General Vincent Brooks, head of U.S. Army Pacific Command, said no decisions had been made about deploying a U.S.-owned Terminal High Altitude Area Defense (THAAD) battery in the Middle East or South Korea, another region where he saw an urgent need given the threat posed by North Korea.

"The need is there in ... those two places, urgently, because we have adversaries who have capability and they have demonstrated that they are willing to use it," Brooks told Reuters in an interview.

Brooks did not name Iran, but U.S. military officials have raised concerns in the past about Iran's development of longer-range missiles that could reach Israel and potentially Europe.

The U.S. military must weigh its options, given the high cost involved in deploying the THAAD weapon system, built by Lockheed Martin Corp, Brooks said. He said the U.S. military also continued to explore options for lower-cost systems to defend against lesser threats, but gave no details.

The U.S. Army is preparing to swap out a THAAD battery that has been operating in Guam for about a year. It has four active THAAD batteries, with a fifth to start training this year.

Sources familiar with the THAAD system said they did not believe a deployment to the Middle East was imminent.