Washington ? The Pentagon said Saturday it had transferred five detainees from the military prison at Guantanamo Bay, Cuba, to Afghanistan.

A written statement did not say why the detainees were released and did not disclose their identity or home country.

In earlier releases, the military has said detainees were freed because they no longer were considered enemy combatants. The Pentagon said the latest releases came after “multiple review processes” at Guantanamo.