The summary of an internal investigation determined that the agency did not adequately prepare its local partners for their duties at the event in Butler, Pa., in July.

A U.S. Secret Service probe found communication gaps and a lack of diligence ahead of the July attempted assassination of Republican presidential candidate Donald Trump at a Butler, Pennsylvania, rally.

The local police responsible for the roof a shooter used to fire at ex-President Trump in Butler, Pennsylvania, had never spoken to the Secret Service prior to the shooting, says a report released by the Secret Service on Friday.