In a meeting with chief ministers of Indo-Bangladesh border states, Singh said that almost 1,000 km border of the total 4,096 km is not fenced.
Union home minister Rajnath Singh held a meeting in Calcutta with representatives of five states that share borders with Bangladesh, including chief minister Mamata Banerjee.
The meeting, called by the Indian home minister, would discuss the influx of Rohingya and Bangladeshi immigrants, and explore ways to check it, an Indian home ministry official said.
He stressed on the need for preventing entry at global borders of illegal migrants some of whom have links with the extremist groups for furthering anti-national activities with ulterior motives and posing threat to internal security, " Mr Singh commented.
"Radical elements and terrorists can be checked only with joint action and active cooperation of Central and State Governments", he said.More news: Brexit Irish border deal possible within hours
According to official estimates, around 36,000 Rohingyas are now living in various parts of India.
He said that out of 4096 km Indo-Bangla border, installation of fencing has so far done in 3006 km.
He admitted that of the 4,096-km-long Indo-Bangladesh border across the five states, only 3,006 km had barbed fence, roads, floodlights and BOPs. Meghalaya was represented by its chief secretary and Tripura by its home secretary.
Earlier, in a meeting with the chief ministers of Indo-Bangla border states, Singh made it very clear that the government would not compromise on border issues.
Unified Command structures comprising army, paramilitary forces and State police are in place in States like Jammu and Kashmir, Assam and Nagaland to effectively deal with militants.More news: Shares Of Bristol-Myers Squibb Company (BMY) sold By LEUNG SANDRA
"Centre is committed to make borders with all neighbouring countries totally foolproof and secure in the days ahead", the home minister told the mediapersons on Wednesday.
"We discussed the border security and steps to be taken to stop illegal migration, armed infiltration and smuggling through the India-Bangladesh border", he added.
The Bengal government's land policy cropped up as a major hurdle to the Centre's plan at a meeting to fence the borders with Bangladesh.
Those expected to attend the Kolkata meeting include chief ministers of West Bengal, Assam, Meghalaya, Tripura and Mizoram.More news: Shares in Western Gas Partners, LP (WES) Purchased by ING Groep NV
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