Karachi: In an unprecedented crackdown on indiscipline, the Pakistan Cricket Board on Wednesday indefinitely barred its former captains Younus Khan and Mohammad Yousuf from playing for the country and imposed one-year bans on Shoaib Malik and Rana Naved-ul-Hasan in the wake of the team's disastrous tour of Australia.

The PCB also put the Akmal brothers -- Kamran and Umar -- and Shahid Afridi on probation for six months besides imposing fines between Rs 2-3 million for indiscipline on the tour after implementing the recommendations of an inquiry committee formed to evaluate Pakistan's dismal performance.

PCB's tough stand virtually puts an end to the international careers of Younus (32) and Yousuf (35) -- two of the country's most accomplished batsmen in the middle order --and is bound to bring about wholesale changes in the team.

Pakistan were whitewashed in all the three formats of the game in Australia during the recent tour in December-January, following which PCB had set up a six-member inquiry committee headed by Board's chief operating officer Wasim Bari.

The committee had recommended that Yousuf and Younus should no longer be part of the national team in any format because of their bad influence on the team and that Malik and Rana be banned for 12 months and fined Rs 2 million each, the PCB said in a statement.

PCB spokesman Nadeem Sarwar said the Board had decided to implement the recommendations of the inquiry committee to salvage Pakistan cricket.

"The committee was an independent set up and they interviewed around 13 players and studied the reports of the manager, coach, assistant coach and captain before taking a decision," Sarwar said.

The players, however, would have the right to appeal against the decisions and they can also talk to PCB Chairman Ejaz Butt for a review of the same, Sawar said.

PCB's legal adviser Tafazzul Rizvi, who was a member of the inquiry committee said that the players under the law had the right to appeal in any court against their punishments.

"The inquiry committee has based its recommendations on the hearings we held with the players and team officials and also after going through the reports of the team manager, coach, assistant coach and captain," he said.

"The inquiry committee has done what it felt was necessary to put Pakistan cricket back on the right track," he added.

The Board said that it had banned Yousuf and Younus from playing for Pakistan but they could continue to play domestic cricket and in foreign leagues.

"Mohammed Yousuf and Younus Khan, keeping in view their infighting which resulted in bringing down the whole team, their attitude has a trickle down effect which is a bad influence for the whole team. They should not be part of national team in any format," the statement said quoting the committee report.

The inquiry committee's report on Afridi said: "For the shameful act of Shahid Afridi, which has brought the game and country into disrepute, he be fined Rs 3 million.

"A warning be issued to him by the PCB Chairman and he be put on probation for six months, during which his conduct be strictly monitored."

The punishments are set to impact the composition of Pakistan's World Twenty20 Championship. The team is the defending champion in this format and the 15-man squad for the event is due to be out by the end of this month.

With Afridi also on a six-month probation, it is quite likely that a new captain will be named for Pakistan's upcoming international tournaments.

The PCB has stopped short of calling the punishment on Yousuf and Younus a life ban.

"They will not be part of any Pakistan team in any format from here on. A life ban means they cannot play domestic cricket or any other similar cricket, but we are not stopping them from that. They can play domestic cricket or county cricket here and abroad," Rizvi said.