At least 20 people have been killed in a blast Monday in Rawalpindi, a city just next to Pakistan's capital, a rescue official said. Nayyar Ali Babar said he saw at least 20 bodies and "a couple dozen" wounded people. The explosion occurred near a bank and a hotel not far from the army's main headquarters. Suspected insurgents have struck repeatedly in recent weeks, killing about 250 people in apparent retaliation for an army offensive in a Taliban stronghold in the northwest.