Updated

Intelligence officials say the new leader of the Pakistani Taliban has returned to the country from Afghanistan to lead the militant group.

The officials said Tuesday that Mullah Fazlullah arrived in Pakistan's semiautonomous tribal region along the Afghan border several days ago. They spoke on condition of anonymity because they were not authorized to talk to journalists.

Fazlullah was appointed the leader of the Pakistani Taliban in November after the former chief, Hakimullah Mehsud, was killed in a U.S. drone strike.

Fazlullah was the leader of the Pakistani Taliban in the northwest Swat Valley and fled to Afghanistan after the army launched an offensive there in 2009. He is known as a particularly ruthless militant who planned the attempted assassination of teenage activist Malala Yousafzai.