In this Oct. 4, 2009 file photo, Pakistani
U.S. hellfire missiles targeted Hakimullah Mehsud's vehicle in the Pakistani border region of northern Waziristan after he left a meeting.
The Pakistani Taliban, called the Tehreek-e-Taliban movement, is a different entity from the Taliban in Afghanistan, but they are designated as a terror group by the United States and are closely allied with the Afghan fighters and with al Qaeda.
Mehsud had a $5 million bounty on his head from the U.S. government.
This is a developing story and will be updated as more information is available.