Omar Mir Seddique Mateen, the Orlando, FL terrorist and an Afghani-American, worked for a major Department of Homeland Security contractor for nearly a decade.

Questions are now being raised that ISIS sympathizers and agents have successfully infiltrated the federal agency used to combat terrorists.

Mateen worked for G4S Secure Solutions USA Inc. since September 10, 2007.

“G4S supports the U.S. Department of Homeland Security, Customers and Border Protection (CPB), with its operations at the U.S-Mexico border and with U.S. Immigration and Customers Enforcement (ICE) to transport illegal immigrants in selected urban area,” according to a G4S brochure secured by American Patriot Daily.

The DHS contract is with hundreds of millions of dollars and the contract states that one of the “performance requirements” is to help identify “suspected terrorists” trying to enter the U.S.

It’s not yet clear if Mateen specifically worked on any contracts dealing with federal inmates.

However, one of his jobs was to guard and transport local prisoners in Florida.

It’s also not clear what kind of security clearance Mateen held.

President Obama, who refused to acknowledge Mateen’s actions as an act of “radical Islamic terrorism”, insists the shooter was “an example of homegrown extremism”, who pledged allegiance to ISIS “at the last minute.”

Earlier Monday, Saudi Arabian officials stated that the gunman had visited the kingdom twice on pilgrimages in 2011 and 2012.

FBI Director James Comey said the gunman had “strong indication of radicalization”, and that the FBI investigated him for 10 months beginning in May 2013, because he had made “inflammatory and contradictory” statements about ties to terrorist groups which caught his coworkers’ attention.

Despite these obvious red flags, Mateen was legally allowed to obtain .223 caliber rifle and a Glock.