Arrest in I.C.E. Shooting?

DHS says it's in "relation to the shooting." 

No idea what that means, but he's an ILLEGAL ALIEN of all things - with a previous weapon charge that probably should have gotten him deported a long time ago:

• A Department of Homeland Security spokesperson said agents were shot at on Saturday during an operation near 26th Street and Kedzie Avenue in the Little Village neighborhood.

  On Monday, DHS told NBC Chicago they arrested an undocumented man from Mexico in relation to the shooting. Authorities said he has a prior conviction for unlawful use of a weapon, although they hadn't released his identity as of Monday evening.

So what is he still doing on this side of the border? 

Another one of Fata$$'s and Conehead's sanctuary beneficiaries?