By Roland Buerk
BBC correspondent in Dhaka
High level talks between India and Bangladesh are getting under way amid claims from both sides that the other is harbouring rebel groups.
India wants joint operations against the alleged camps
The issue is expected to dominate the two days of discussions in Dhaka between the home secretaries of the neighbouring countries.
It is the first time the two senior civil servants have met in four years.
Bangladesh has always denied that there are any Indian rebels on its side of the border.
But a spokesman for Indian Home Secretary Dhirendra Singh said he had come to Dhaka with a list of the names and addresses of militants that he wants Bangladesh to deport.
India is concerned that insurgent groups in the north east states are using Bangladesh as a base for carrying out bloody bombing campaigns.
In turn the Bangladeshi Home Secretary, Omar Farooq, claims India is harbouring Bangladeshi rebels and criminals.
India is expected to propose that the two neighbours carry out joint operations against the insurgents.
The row over of rebel camps has already soured relations between Bangladesh and India.
Last week Bangladesh's Foreign Minister Morshed Khan complained that India's list of alleged rebels grew longer each time officials from the two countries met.
He invited Indian officials to fly by helicopter to the locations where they claim the camps are to verify that nothing is there.