Australia are unlikely to tour Pakistan to play a five-match one-day series and a Twenty20 game because of lingering fears over security in the troubled nation, a top official said Wednesday. The latest blow to Pakistan cricket follows a decision by the International Cricket Council (ICC) Sunday to relocate the 2009 Champions Trophy away from the country. Pakistan Cricket Board (PCB) chairman Ijaz Butt told a foreign news agency that the Australia series was unlikely to take place in Pakistan in April after a meeting with Cricket Australia officials in Melbourne. "It (the series) is unlikely to be played in Pakistan," Butt said. "We are discussing dates and venues, which I will let the media know when I return on Friday," he said.