Karachi, March 25 (IANS) Younis Khan Thursday challenged Pakistan Cricket Board's (PCB) decision to ban him indefinitely.

Younis, a former captain, has filed a plea against the ban, handed down by the PCB earlier this month in the aftermath of Pakistan's disastrous tour of Australia, sources said.

Sources said Younis's lawyer Ahmed Qayyum is confident the senior batsman will get a reprieve following his appeal against the ban.

Also, Qayyum, who is son of Pakistan's former Attorney General Justice (retd.) Malik Qayyum, has asked the board to furnish evidence that Younis was responsible for any wrongdoings during the tour of Australia.

Younis was one of the seven leading cricketers banned or fined by the PCB, which said it was acting on recommendations from a probe committee that investigated into the causes behind Pakistan's poor performance against Australia.

Younis and another former captain Mohammad Yousuf were banned indefinitely for "infighting" while Shoaib Malik and Rana Naved-ul-Hasan were banned for one year.

Shahid Afridi, the captain of the Twenty20 side, was fined Rs.3 million and put on probation for six months over his "shameful act" of biting the ball in Perth.

The Akmal brothers, Kamran and Umar, were treated similarly and told their conduct would be strictly monitored.