The fallout from US-Pakistan tensions over the arrest of CIA contractor Raymond Davis for killing two Pakistanis on January 27 has continued to expand. Dawn.com reported on Friday on the number of US personnel in Pakistan believed to have diplomatic immunity, and on the same day, an American was arrested for overstaying his visa in Pakistan. Taken together, these bits of information suggest that Pakistan is carefully analyzing the data it has on potential US operatives within Pakistan and is carefully documenting their status. On Monday, the Express Tribune reported that it has received word that some suspected US spies in Pakistan have stopped their activities and some have even left the country.