The Chief Minister said this while chairing a meeting with the top brass of the BSF led by its Director General K.K. Sharma.
Sonowal asked the BSF to ensure erection of fencing expeditiously for a safe border with the neighbouring country.
The chief minister asked the BSF to make use of 'smart technological solutions' like laser walls and surveillance gadgets to maintain security at the frontiers.
"Erection of fencing along the border including riverine areas has to be dealt with resolutely if we want to make our borders safe. It is a part of our pledge that we will completely seal international border with Bangladesh in order to keep infiltration and smuggling from across the border at bay," he said.
Sonowal said the government would give all help to the BSF in carrying out the job, particularly along the 42 km stretch in Dhubri sector which the BSF described as challenging.