Lahore and Karachi are the two host cities for the Champions Trophy and this week they were declared safe and ready by ICC chief executive Haroon Lorgat.
More bombings and threats this week could not have come at a worse time for officials pushing for the one-day tournament to remain in the troubled nation, reported the Daily Telegraph.
That may change after the latest blast came amid Pakistan''s preparations for celebrating the 61st anniversary of its Independence Day, added the paper.
ICC chief David Richardson, worldwide players'' union boss Tim May, and Pakistan coach Geoff Lawson will meet CA, the Australian Cricketers Association and captain Ricky Ponting and his deputy Michael Clarke this afternoon in Melbourne to discuss the issue.
The three-man delegation met New Zealand Cricket Thursday and former Australian fast bowler Lawson is expected to continue to support the tour.
But, that will be even a harder task after a suicide bomber on Thursday blew himself up outside a Lahore police station and killed at least seven people, including five policemen.
Yesterday"s attack came just a day after 13 people were killed when a roadside bomb hit an air force bus in the north-western city of Peshawar.
The Taliban claimed responsibility for the bombing and media reports suggested it could have been a revenge attack for a Pakistani offensive against the Taliban in a tribal area bordering Afghanistan.