The message by Nasser al-Wahishi, posted on militant websites today, warns al-Qaida prisoners not "to be lured by their jailers" and promises that "victory is imminent" to ensure their freedom.
The note by al-Wahishi, a onetime aide to Osama bin Laden, comes after last week's closure of 19 US diplomatic missions triggered by the interception of a secret message between al-Qaida chief Ayman al-Zawahri and the Yemeni branch's leader about plans for a major attack.