At least 35 people are dead after four militants opened fire and threw grenades before blowing themselves up during Friday prayers at a mosque near army headquarters in Rawalpindi. A local TV station reported that several high-ranking military officials died in the attack, although the army declined to confirm this. The attack took place in a heavily fortified area of the city, a few miles in the capital. Violence has escalated in Pakistan ever since the army launched its South Waziristan offensive in about six weeks ago. Since October, 400 people have died in Pakistan, and there have been two other attacks in the garrison city of Rawalpindi.