Pro-Iranian Shiite Moslem extremists holding at least two Americans hostage said Thursday they will not release any captives unless all their demands are met.

The typewritten statement from Islamic Jihad was delivered to the Beirut office of the Reuters news agency along with a black-and-white photograph of American hostage Terry Anderson.Islamic Jihad, or Holy War, has admitted holding both Anderson and Thomas Sutherland.

Anderson's photograph was released with the Arabic-language statement in the group's normal way of proving the statement is authentic.