The shooter at the Donald Trump campaign rally has been identified.

Just hours after the Saturday (July 13) shooting in Butler, Pa., authorities confirmed the identity of the now deceased shooter who opened fire at the former president and rally crowd.

The Secret Service were able to "neutralize" the assailant, who was confirmed to be a white male and not an attendee at the rally.

At this time, NBC's sources say the shooter was roughly 20 years of age and from Pennsylvania.

Sources close to the investigation told The New York Post that the gunman was not initially identified because he wasn't carrying identification on him.

He reportedly used an AR-style rifle.

A police officer who was on site at the rally along with a law enforcement official confirmed to CNN that the gunman shot his rifle from a rooftop outside of the venue, which was positioned just to the right of Trump's shoulder, as the former president stood on stage.

Reported photos of the deceased gunman on a nearby roof circulated on social media in the hours following the incident.

According to NBC's report, the assailant was wearing merchandise by the popular firearm YouTube channel Demolition Ranch

Donald Trump Rally Shooting: Photos From the Scene

See photos from the scene of the shooting at Donald Trump's Pennsylvania campaign rally.

Gallery Credit: Jacklyn Krol

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