The Secret Service's director says the roof where a shooter opened fire at Donald Trump's Pennsylvania rally was identified as a potential vulnerability days before the event.

Director Kimberly Cheatle made the comments Monday as she was grilled by lawmakers over the July 13 assassination attempt of the Republican presidential nominee.

Cheatle acknowledges the agency was told about a suspicious person “between two and five times” before the assassination attempt of the former president.

Cheatle told lawmakers during a congressional hearing, “On July 13, we failed.”

Cheatle was berated for hours by Republicans and Democrats, repeatedly angering lawmakers by evading questions about the investigation into the shooting.