Alex Pretti reportedly had at least one previous encounter with federal immigration officials before he was shot and killed by Border Patrol agents on Saturday.  

About a week before his death, federal officers tackled Pretti, breaking one of his ribs as he was shouting and blowing a whistle while agents were attempting to make arrests in Minneapolis, CNN first reported. 

Anti-Immigration and Customs Enforcement protesters have commonly used whistles to alert passers-by to the presence of immigration enforcement agents in the area.

Federal immigration agents have kept a record of the individuals they have interacted with, according to CNN, but the Department........

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