Pakistan Twenty20 captain Shahid Afridi and team coach Waqar Younis will appear as witnesses before an anti-corruption tribunal after a request from the International Cricket Council.

Pakistan Cricket Board said Saturday that both Afridi and Younis will appear "either in person or through teleconference depending on their convenience and subject to their professional commitments."

The tribunal will conduct the hearing of Pakistan's suspended cricketers Salman Butt, Mohammad Asif and Mohammad Amir from Jan. 6-11 at Doha, Qatar.