'Our dossier(s) contain enough proof to nail the (Mumbai attack) accused,' Krishna told reporters in Bangalore.
'We have the names (of terrorists) involved in the Mumbai attacks and have sent them to Pakistan and it is but natural that they should be arrested and punished accordingly,' he maintained.
India has given six dossiers to Pakistan over the attacks. LeT chief Hafiz Saeed is viewed as the mastermind of the carnage.
Saeed had been placed under house arrest in December after the UN proscribed the Jamaat-ud Dawa (JuD) that the LeT had morphed into after being banned after the Dec 13, 2001 terror attack on the Indian parliament that was blamed on the terror group.
The Lahore High Court had freed him in June, citing insufficient evidence to warrant his continued detention.
The Pakistani Supreme Court has indefinitely put off a hearing of a plea against Saeed's release.