New Delhi, June 2 (PTI) India today slammed Pakistan over the release of Jamaat-ud-Dawa chief Hafiz Mohd Saeed, the prime accused in the Mumbai attack, saying it demonstrates Islamabad's lack of seriousness in its commitment to bring to justice the perpetrators of the carnage. "It is a commentary on the commitment of Pakistan to investigate the perpetrators of the Mumbai attack," Home Minister P Chidambaram said here while reacting to Saeed's release from detention in Lahore.

"We are unhappy that Pakistan does not show the degree of seriousness and commitment that it should to bring to justice perpetrators of the Mumbai terror attack," he told reporters when asked to comment on the development. He, however, underlined that the development will not cause any setback to India's investigations into the attack.

Saeed was put under house arrest on December 11 last year after the UN Security Council banned JUD, declaring it a front for Lashkar-e-Taiba, which is blamed by India for the November 26 Mumbai attacks. India feels that Pakistan did not press any strong charges against Saeed enabling the Lahore High Court to set him free.