A Yemeni portrayed as an al-Qaida operative and a member of a terrorist family confessed to plotting the bombings of the USS Cole and two U.S. embassies in Africa, killing hundreds, according to a Pentagon transcript of a Guantanamo Bay hearing.

The transcript released Monday was the fourth from the hearings the military is holding in private for 14 "high-value" terror suspects who were kept in secret CIA prisons before they were sent to the U.S. facility in Cuba last fall.

Last week, Waleed bin Attash said he helped plan the 1998 embassy bombings in Kenya and Tanzania that killed more than 200, according to the transcript. He also said he helped organize the 2000 attack on the USS Cole in which suicide bombers steered an explosives-laden boat into the guided-missile destroyer, killing 17 sailors.