AIUMB had recently organised the World Sufi Forum in the national capital to discuss a "counter narrative" to extremist and violent methods adopted by jihadist forces such as ISIS.
No group or outfit has owned up the attacks so far, the latest to target Europe.
During the four-day event, which was attended by Prime Minister Narendra Modi, more than 200 sufi leaders and academicians from 20 countries had agreed to form a global alliance to tackle radicalisation and terror by promoting Sufism around the world.
"Such attacks are a grim reminder to the entire world that radicalisation and spread of terror in the name of religion needs to be urgently tackled. Such attackers are of no religion. They only misuse and discredit religions only to achieve their vested interests," he said in a statement.
"We also hope that such attacks do not flare up atrocities against any specific community or people of certain nationalities. We should not respond to terror by discriminating innocent people. It is important to alienate such terrorists and not identify them with any religion."
