DUBAI, United Arab Emirates - An audio tape purportedly released by Osama bin Laden's deputy calls for attacks on U.S. and British forces everywhere, according to a broadcast today by Al-Jazeera television.

The Arab station said the speaker on the tape was Ayman al-Zawahri, but it was not immediately possible to verify the authenticity of the recording.

The speaker calls on Muslims "not to wait any longer, otherwise, we will be devoured, one country after the other," according to Al-Jazeera.

The U.S. government has offered up to $25 million for information leading to the killing or capture of al-Zawahri, the al-Qaida network's No. 2 official.

The last video purportedly from al-Zawahri surfaced last month just prior to the third anniversary of the Sept. 11, 2001, attacks. In it, a bearded al-Zawahri proclaimed the United States will be defeated in Iraq and Afghanistan.