ISLAMABAD, Pakistan  An American missile hit the Mehsud tribal region of South Waziristan on Tuesday, killing at least 10 people in the same area where the leader of the Pakistani Taliban was apparently killed in a drone attack last week, Pakistani security officials said.

The missile struck near the town of Kani Gurram, one of the largest in the area, which is home to the Pakistani Taliban movement. American and Pakistani security officials say they believe the leader of the movement, Baitullah Mehsud, was killed in a drone strike by the C.I.A. last Wednesday.

The officials spoke on the condition of anonymity because they were not authorized to brief reporters.

Details of the strike on Tuesday were unclear. Reuters reported that the missile had apparently hit a house that was being used by the Taliban, but it was not clear if the attack killed any Taliban commanders. Many of them have reportedly gathered in the area in order to choose Mr. Mehsud’s successor.