The International Cricket Council will review plans for the 2011 World Cup following the terrorist attack on the Sri Lanka team coach in Lahore.
Pakistan is due to stage 14 games in the event as co-hosts alongside India, Bangladesh and Sri Lanka.
One of the semi-finals was scheduled for the Gaddafi Stadium in Lahore, which was the intended destination for the Sri Lanka bus when it was attacked by gunmen.
Five policeman were killed in the ensuing battle while five Sri Lankan players were injured by shrapnel.
The players included vice-captain Kumar Sangakkara, who confirmed he and his team-mates were "safe and out of danger" after the gun attacks.
But ICC chief executive Haroon Lorgat admitted there would now be urgent talks about whether to shift World Cup matches away from Pakistan in two years' time.
He told Times Now: "In the next day or two we will have to make some serious decisions and we will.
"We can be thankful that there were not more fatalities.
"There obviously have been breaches and the security has not been good enough.
"There will be some serious repercussions from this, but for the time being we need to make sure the players, the officials and the people who have been dear to us are safe.
"That must be our focus for now and we will address that as much as we possibly can."
The third Test between Sri Lanka and Pakistan has been abandoned following the attack with the visiting players airlifted from the stadium.
Several players and officials were treated for shrapnel wounds but Sangakkara told CNN-IBN: "There are a few injuries but everyone is safe and all the players are out of danger.
"We are shocked, but apart from that everyone is okay.
"Thilan (Samaraweera) has a shrapnel wound in his leg, but he is fine.
"(Tharanga) Paranavitana had shrapnel in his chest, but thank God it wasn't very deep and just on the surface.
"I had shrapnel injuries in my shoulder, but they have all been removed and I'm okay now.
"Ajantha (Mendis) had shrapnel in his neck and scalp, but he too has had medical attention and is fine."
Thilan Thushara was the fifth player confirmed by Sri Lanka sports minister Gamini Lokuge to have been injured.
This was the first Test series to have been played in the country for 14 months.
Australia last year refused to tour Pakistan amid the unrest which followed the assassination of former prime minister Benazir Bhutto.
The Champions Trophy in the country was also called off, while Sri Lanka were only touring because of the breakdown in relations between Pakistan and India.
Following the attack in Lahore, should the ICC allow Pakistan to co-host the 2011 World Cup? Let us know your thoughts using the form below.
Should Pakistan still be allowed to co-host the 2011 World Cup?