Missile Strikes Kill at Least 54 in Pakistan

Pakistani officials say three U.S. missile attacks have now taken place close to the Afghan border and that 54 alleged militants have been killed in the strikes.

The officials say Friday's strikes took place in the Khyber tribal region.

They say some of the dead include senior members of the Lashkar-e-Islam militant group. The officials spoke on condition of anonymity because they are not authorized to talk to the media.

Earlier Friday, Pakistani officials said that the first two strikes affected a region that has seen few such strikes in the past, possibly signaling an expansion of the CIA-led covert war inside the country.

The missiles, fired by unmanned drones, hit houses in the villages of Spin Drag and Shandana in the Tirah Valley of the Khyber region, two Pakistani intelligence and two government officials said. The same valley, which is known to be home to Islamist militants, was hit late Thursday in another U.S. attack.

U.S. officials do not acknowledge firing the missiles, much less comment on who they are targeting. In the past, there have been occasional attacks in rarely hit areas of the border region, including at least one in Khyber.

Most of the more than 100 missile attacks this year inside Pakistan have taken place in North Waziristan, which is effectively under the control of a mix of Taliban, al Qaeda and related groups. The region, seen as the major militant sanctuary in Pakistan, has yet to see an offensive by the Pakistani military.

On Thursday, President Obama urged Pakistan to do more in tackling extremists in the border lands. Pakistan's army has moved into several tribal regions over the last two years, but says it lacks the troops to launch a North Waziristan operation anytime soon and hold gains it has made elsewhere.

U.S. Ambassador to Pakistan Cameron Munter said the United States would like the Pakistani army to move into North Waziristan "tomorrow" but that he believed Islamabad's stated reasons for not attacking region immediately.

"I think there is a capacity issue," Munter told reporters Friday. "There is a great amount of capacity being used in holding the ground the Pakistani army has won at great cost."

Pakistani officials protest the missile strikes, but are believed to secretly authorize and provide intelligence on at least some of them. Analysts also say targeting information for many of the attacks is likely to be provided by Pakistani intelligence officials.