The president of international cricket's governing body on Tuesday expressed serious doubts over the fitness of Pakistan to stage any of the 2011 World Cup matches.
"I believe the world cup will be staged in the Indian subcontinent. How much of it, if any, will be staged in Pakistan remains to be seen," David Morgan of the International Cricket Council (ICC) told the BBC.
"I think it's too early (to tell) - there could be a regime change in Pakistan which would settle things down. But the probability must be that a great deal will have to change in Pakistan before we can [contemplate] playing international cricket there."
Morgan said Tuesday's attack on Sri Lankan cricketers was "devastating news."
"Its terribly, terribly sad. Somebody had said cricketers would never be targeted in Pakistan, and unfortunately that has been proved to be incorrect.
"My first thoughts are that it will be very difficult for international cricket to be hosted in Pakistan for quite some time to come," Morgan said.
The ICC had already taken a decision at its meeting in Perth Jan 31 that the Champions Trophy, scheduled to have been held in Pakistan in September and October, could not be staged there because of safety and security concerns expressed by some countries.