text: Athens Finds Over 150 People With IS Links Posing as Refugees After Paris Attacks - Source ATHENS, March 22 (Sputnik) â Investigations conducted by the Greek security services after the extremist attacks in Paris in November led to over 150 persons suspected of having ties to the Islamic State (IS) militant group, who had entered the country disguised as refugees, being identified, a source in a law enforcement agency said Tuesday.