The Islamic organisation which has been waging war against Iraqi administration, releases videos on internet and sends tweets often. In a latest video clip the ISIS chief Abu Bakr al Baghdadi was seen urging Muslims to hail him as the new leader, obey his commands and join him in the holy war.
A BBC report says that ISIS rebels have been methodically hunting down non-Sunnis and those opposed to the militants.
This is the first time internet was used by a terror group for spreading their propaganda, opine analysts.
The organisation has already released several videos of the members brutally assaulting and killing civilians and soldiers in Iraq.More than one million Iraqis have fled from Iraq due to the militant activities of ISIS in the cities of Tikrit, Mosul and other parts of the northwest region.
The UN and Iraqi officials say that at least 2,461 people have been killed in June.