The alleged gunman who targeted a U.S. Immigration and Customs Enforcement (ICE) facility in Dallas on Wednesday conducted the deadly shooting with "a high degree of pre-attack planning," FBI Director Kash Patel said on social media Thursday morning.

Patel posted a list of updates on X he said come from evidence the bureau has uncovered in the hours since the attack.

The first update was that the suspected shooter had downloaded a document from the Dallas County Office of Homeland Security and Emergency Management "containing a list of DHS facilities."

A similar document to what Patel described is posted on the county website listing the the addresses for the ICE facility in Dallas and the U.S. Citizenship and Immigration Services office in Irving. The document appears to be

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