Pakistani authorities say they are interrogating two suspects in connection with a deadly suicide bomb attack outside the U.S. consulate in Karachi in March.
Local officials say the two men are being questioned about their links to the bombing that killed at least four people, including an American diplomat.
The attacker rammed his explosives-laden vehicle into a car carrying the diplomat, blowing it into the air and over a tall wall. More than 50 people were wounded in the attack.
The consulate has been the target of several attacks by militants in recent years, including a bombing in 2002 that killed 14 people.