A cellphone of Osama bin Laden's trusted courier recovered in the U.S. raid last month that killed both men in Pakistan contained contacts to a militant group that is a longtime asset of Pakistan's intelligence agency, The New York Times reported late Thursday. In a story posted on the Times website, senior American officials and others briefed on the findings said the discovery indicates bin Laden used the group, Harakat-ul-Mujahedeen, as part of his support network inside Pakistan. It raises...

The revelation that a senior Pakistani army officer was detained on suspicion of ties to a radical Islamist group has raised fresh concerns about the reach and influence of an organization that has long vexed analysts and politicians. Hizb-ut-Tahrir says it rejects violence but uses venomous rhetoric and pushes for military coups. It seeks the overthrow of Pakistan's elected government and wants to unite the Muslim world under one government following strict Islamic law. Pakistan's army...