WILDER, Idaho — Federal agents descended on a Canyon County horse racing facility Sunday as part of an ongoing investigation into an alleged illegal gambling operation, where they arrested four people. Immigration and Customs Enforcement (ICE) was also on the scene.

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There was a public horse racing event scheduled when law enforcement began the raid, and many people were in attendance. KTVB can confirm some law enforcement officers are masked, and witnesses report that ICE detained at least 50 more people than the Federal Bureau of Investigation (FBI).

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