New Delhi, Dec 24 (ANI): President Pranab Mukherjee and Prime Minister Narendra Modi on Wednesday condemned the killing of innocents by the banned outfit National Democratic Front of Bodoland (NDFB) in Kokrajhar and Sonitpur districts of Assam. "President Mukherjee strongly condemns killings in Assam, says such acts of terror and violence must be put down with a firm hand," said the President's office tweeter handle. Meanwhile, Prime Minister Modi tweeted, "Killing of innocent people in Sonitpur and Kokrajhar is an act of cowardice. Our thoughts and prayers are with the families of the deceased. I spoke to Assam CM Shri Tarun Gogoi and Home Minister Rajnath ji. Rajnath ji will travel to Assam and take stock of the situation," he added.