WASHINGTON — Kuwait has released an additional 10 American detainees, bringing to nearly two dozen the total number freed by the country in the past two months, U.S. officials told The Associated Press on Wednesday.

Taken together, Kuwait’s pardons of 23 Americans since March — done as a goodwill gesture by the U.S. ally — amounted to the largest release of U.S. citizens by a single foreign country in years.

The prisoners, both men and women, include military contractors and veterans held on drug charges and other offenses by the small, oil-rich nation, including one who was said by supporters to have been coerced into signing a false confession and endured physical violence and threats against his wife and daughter.

Ten others were released in March, weeks after a visit to Kuwait by Adam Boehler, who is serving as the Trump administration’s envoy for hostage affairs.

“We flew out, we sat down with the Kuwaitis, and they said, ‘Listen, no one’s ever asked before at this level” for the release of the Americans, Boehler told the AP.

The releases were not done as part of a swap and the U.S. was not asked to give up anything in return.

Kuwait is considered a major non-NATO ally of the U.S. The U.S. and Kuwait have had a close military partnership since America launched the 1991 Gulf War to expel Iraqi troops after Iraqi leader Saddam Hussein invaded Kuwait, with some 13,500 American troops stationed in Kuwait at Camp Arifjan and Ali al-Salem Air Base.