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Video footage purported to be of the Jordanian bomber who blew up seven CIA agents in Afghanistan has been broadcast on Pakistani and Arabic television.

The video shows a man alleged to be bomber Humam Khalil Abu-Mulal al-Balawi, the Jordanian double agent and suicide bomber, explaining who he is and vowing revenge for Pakistani Taliban chief Baitullah Mehsud's death.

Mehsud's successor, Hakimullah Mehsud, appears to be sat beside him, although he is not named in the video.

The video was broadcast on al-Jazeera TV and its authenticity remains unconfirmed.