Mukherjee expressed shock and distress after hearing about the attack in Kishoreganj on the day of Eid.
"I condemn the perpetrators of this attack in the strongest of terms. This is the second terrorist attack in a week occurring in Bangladesh. The people and government are engaged in a brave struggle against the evil forces of extremism and violence.
"The government of India will strongly stand by our brothers and sisters of Bangladesh in this fight. We will extend every support possible to enable the Bangladesh government defeat these forces whose goal is to spread hatred, chaos and instability," the President said in a statement.