Chief of Pakistan's Intelligence outfit – ISI- Lt Gen Ahmed Shuja Pasha has gone abroad to an undisclosed location amidst reports that he may step down over the failure to detect Osama bin Laden's presence in the country. Dawn newspaper had reported that Pasha had gone to Washington on a critical mission for putting an end to misgivings about Pakistan in the US but the sources said the ISI chief had not gone to the US.Other reports say that the ISI chief may step down, as the government looks for a fall guy for the bin Laden debacle.