"We are pointing the finger at the Pakistan intelligence agency, based on the evidence on the ground and similar attack taking place in Afghanistan," said Jawad.
However, India's Foreign Secretary Nirupama Rao, who visited the blast site, refused to name any country or any agency for the attack.
Prime Minister Manmohan Singh called up Afghanistan President Hamid Karzai and expressed sorrow at the loss of Afghan lives in the attack. The two leaders discussed the situation in the aftermath of the attack.
Meanwhile, investigations are on into the bombing near the Indian Embassy in Kabul where 17 people were killed.
Foreign Secretary Nirupama Rao inspected the site of the attack but declined to take names and assign blame and said India is waiting for the investigation to be completed.
Rao conducted a first hand assessment of security at the Indian Embassy in Kabul. She spoke to some of the personnel on duty there.
Several meetings were also conducted among Indian diplomats. Rao then met Afghanistan President Hamid Karzai, who assured her of a thorough investigation in to the attack.
Rao also had meetings with the Afghan Foreign Minister Rangin Dafdar Spanta and the NSA.
NDTV has learnt that some pieces of possibly the engine of the suicide bomber's car had been recovered and Afghan sources have apparently told India that they will have more leads to get to the bottom of the conspiracy in two to three days.
Meanwhile, security for Indian consulates in Mazar-e-Sharief, Jalalabad, Kandahar and Herat is also being looked at again, possibly with more security staff.
The Foreign Secretary has made it clear that India in her words is committed to reconstruction and will not be affected by such incidents.
Afghanistan has also promised stronger security checkpoints on the roads leading to the embassy.