Published June 9th, 2015 - 09:41 GMT Authorities in the US are investigating many cases of citizens suspected of travelling to, or intending on travelling to Syria. (AFP/file) Tags:WashingtonJerusalemIsraeli government LatestPopular Surprises for Israel: Hezbollah signals unexpected battlefield developments $10M Bounty: US moves to overcome intelligence failure on Mojtaba Khamenei Iran’s New Khamenei Injured, May Be Disfigured Hack on Stryker systems sparks concerns over corporate targets in Iran conflict US refueling aircraft downed in Iraq, 4 soldiers killed Loading content ... Subscribe Sign up to our newsletter for exclusive updates and enhanced content Subscribe Now Subscribe Sign up to get Al Bawaba's exclusive celeb scoops and entertainment news