BUTLER, Pa. – Text messages revealed that law enforcement responsible for monitoring former President Trump’s Pennsylvania rally spotted his would-be assassin and flagged him to colleagues as suspicious at least 90 minutes before he opened fire.

The messages, obtained by Fox News Digital from Sen. Chuck Grassley, R-Iowa, who obtained them from Beaver County Emergency Services Unit, showed that officers flagged 20-year-old Thomas Matthew Crooks after he was spotted using a range finder – but did not approach him.