ISLAMABAD - A US investigation team from Federal Bureau of Investigation (FBI) has joined its Pakistani counterparts to lead the probe into a suicide car bomb attack on an American diplomatic car in Peshawar that killed two people and injured dozens of others.

Sources in the US Embassy told The Nation on Wednesday that FBI team has inspected the blast site and vehicles damaged in the explosion.

The FBI team will work alongside Pakistani investigators as they search for clues to who was behind the blast in which an attacker rammed his explosives-laden car into US Consulate vehicle.

Two American and two Pakistani consulate employees were wounded in the bombing, the deadliest attack targeting Americans in the country in more than two years.

No group has yet claimed responsibility, but militants linked to the Taliban and al Qaeda have targeted the Consulate and its staff at least twice before since April 2010.

US State Department spokesperson told Press briefing on Tuesday that FBI team will lead an American investigation while working alongwith Pakistani authorities.