Pakistani authorities seized three bomb-laden vehicles and arrested three suspected suicide attackers just days after an assault on the Danish Embassy.
Police increased security near the enclave in Islamabad where most foreign diplomatic missions are located. The U.S. Embassy strongly advised Americans to limit nonessential movement in the capital and nearby Rawalpindi.
Police Chief Nasir Durrani said authorities were investigating whether the suspects had intended to target embassies. He did not identify them or say whether they were affiliated with any group.