ISIS supporters posted photos on twitter showing the group's logo with messages warning of the countdown "till the zero hour" near famous Italian landmarks, Al Arabia News reported on Monday. The threat message included an image showing a message in Arabic reading "Islamic State in Rome. We are in your streets", with Rome's Coliseum seen in the background and what appears to be Italian emergency services vehicles and train stations. "Islamic State in Rome. Now is observing and assessing for the target. Waiting for the zero hour," another published image as per the Daily Mail. The BBC reported that as per Libyan intelligence, ISIS is exploiting the Mediterranean refugee emergency to send its fighters to central Europe. There has been a growing fear of ISIS militants taking advantage of migrants crossing the Mediterranean to send fighters to Europe. As agreed by EU leaders in Brussels, under the emergency summit crisis package that was held in April 23rd, the refugee emergency offered resettlement places across Europe.