The administration removed Iranian militant group Mujahedeen-e-Khalq off its terror list. (Creative Commons)

The Mujahedeen-e-Khalq, which began as a guerrilla movement against Shah Mohammed Reza Pahlavi, overthrew the monarch in 1979. It fought alongside Hussein's forces during the Iran-Iraq war, but disarmed after the 2003 U.S. invasion of Iraq.

Iran's foreign ministry said in a statement that taking the group off the list was "a violation of America's legal and international obligations" that could threaten U.S. interests.

More from the AP:

"There is much evidence of the group being involved in terrorist activities. Delisting them shows America's double standard policy on terrorism," state TV said. The U.S. distinguishes between "good and bad terrorists" and the MEK are now "good terrorists because the U.S. is using them against Iran," the report also said, adding that Washington and Israel use the group to spy on Iran's nuclear program.

The U.S. and its allies have accused Tehran of secretly developing nuclear weapons, although Iran has stated that its program is intended for peaceful purposes.

Read the full story at the Associated Press or follow more Neon Tommy coverage of Iran here.

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