India today termed the filing of chargesheet against David Headley as an important step in exposing the wider conspiracy behind Mumbai attacks.<br/> <br/>The External Affairs Ministry said charges against Headley points out that terror outfits like LeT, HUJI and Al-Qaeda continue to remain active in plotting new acts of terrorism, targeting India as well as other countries.<br/> <br/>MEA spokesperson Vishnu Prakash said in New Delhi today that now the onus is on Pakistan to follow the leads and act with determination against terrorism to dismantle the infrastructure of terrorism in its territory.<br/>