Four employees with the U.S. consulate were seriously injured while five other individuals were killed Monday in an apparent suicide bombing in the northwestern Pakistani city of Peshawar, NBC News reported. A U.S. embassy spokesman confirmed to NBC News that two Americans and two Pakistani employees of the U.S. consulate were seriously injured in the explosion, and are currently in the hospital. "No U.S. Consulate personnel were killed, but we are seeking further information about other victims of this heinous act," the U.S. Embassy in Pakistan said in a statement. Regional Information Minister Mian Iftikhar told reporters a bomber rammed a car filled with explosives into a U.S. government vehicle just as it was leaving the U.S. consulate en route to a building occupied by a United Nations agency. There was no immediate claim of responsibility for the attack, which left a crater along a busy street. Secretary of State Hillary Clinton said during a visit to Indonesia that "we deplore the cowardly act of suicide bombing and terrorism that has affected so many around the world." The suicide bombing comes a few days after another car bombing in the Mattani district killed at least 11 people.