On Thursday Republican lawmaker Scott Perry (R-PA) told Tucker Carlson he was evidence ISIS may be involved in the deadly attack.

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Rep. Scott Perry (R-PA): Recently I’ve been made aware of what I believe to be credible evidence regarding potential terrorist infiltration through the southern border regarding this incident… Twice before the attack ISIS warned the United States they would attack Las Vegas. In June and August. And then after the attack claimed responsibility four times… Something’s not adding up… I’m just telling you I have received what I feel to be and believe to be credible evidence of a possible terrorist nexus...