The Bureau of Investigative Journalism, based on extensive research in mid-2011, claims that at least 385 civilians were among the dead, including more than 160 children. In July 2009,Brookings Institution released a report stating that in the United States-led drone attacks in Pakistan, ten civilians died for every militant killed. S. Azmat Hassan, a former ambassador of Pakistan, said in July 2009 that American UAV attacks were turning Pakistani opinion against the United States and that 35 or 40 such attacks only killed 8 or 9 top al-Qaeda operatives.
Although it may never be known how many civilians have died as a result of U.S. UAV strikes in Pakistan, there are estimates of hundreds or thousands of innocent bystanders who have perished in such attacks. Pakistani authorities released statistics stating that between 1 January 2009 and 31 December 2009, U.S. RQ-1 Predator and RQ-9 Reaper UAV strikes have killed over 700 innocent civilians. The website PakistanBodyCount.Org (by Zeeshan-ul-hassan Usmani, a Fulbright Scholar at the Florida Institute of Technology) shows 1,065 civilian deaths between June 2004 and 30 January 2010 and tallies 103 UAV strikes carried out by the United States.