At least 36 people are dead after militants attacked a mosque close to army headquarters in the Islamabad suburb of Rawalpindi, the Telegraph reported this morning. Militants armed with guns and grenades attacked the mosque in a suicide mission, the Guardian reports, adding that some local television stations are placing the death toll as high as 50.

The attack is the latest in a series since the Pakistani army launched an offensive against Taliban forces near the Afghan border in October: An 10 October raid at the nearby army base left 23 people dead and a 2 November suicide bomb killed 35 people in the same region.

The news of the attack comes the day after Pakistani officials expressed concern over the US’s plan to withdraw from Afghanistan in 2011, claiming that a timeline could increase destabilization in Afghanistan and, consequently, Pakistan. Since President Barack Obama’s announcement, more than 20 countries have pledged an additional 5,000 troops to the cause, the Wall Street Journal reported this morning.