India, Feb. 15 -- Assam chief minister Himanta Biswa Sarma on Sunday said security in the Northeast is a prime concern and several strategic infrastructure projects are being implemented to ensure uninterrupted connectivity to the region even in the event of an attack by an enemy nation.

Sarma's remarks came a day after Prime Minister Narendra Modi inaugurated an emergency landing facility (ELF) on a national highway at Moran in Assam's Dibrugarh district, and after the Union Cabinet approved the construction of a twin-tube road-cum-rail tunnel beneath the Brahmaputra river connecting Numaligarh to Gohpur.

The Rs.18,662-crore project will be the second such twin tunnel in the world after a similar one being built under the Baltic Sea be...