Sri Lankan External Affairs Minister G L Peiris said that Colombo had assured New Delhi that its soil will not be used for anti-India activities.
"We have constantly assured India that under no circumstances will Sri Lankan soil be used for any acts against India," Peiris said at a meeting chaired by President Mahinda Rajapaksa.
Sri Lanka has started deporting dozens of Pakistani nationals who have been staying in the country for long periods pending the processing of their applications.
Indian authorities recently uncovered an alleged plot by a Pakistan-based terror group to carry out suicide attacks on US and Israeli consulates in south India.
The conspiracy was reportedly planned overseas including in Sri Lanka, Malaysia and the Maldives.
The plot was foiled by effective coordination of the Intelligence Bureau (IB) with countries such as Malaysia which tipped off India about the plan being hatched from Sri Lankan soil to attack the consulates in Chennai and Bangalore.