Sen. Ron Johnson, R-Wisc, released his official 13-page preliminary findings of his office’s investigation into the assassination attempt of former President Trump.

Trump survived the assassination attempt on July 13 at a campaign rally in Butler, Pennsylvania, where alleged gunman Thomas Matthew Crooks, 20, opened fire, killing one spectator and injuring several others, including Trump, who suffered injuries to his ear.

Shortly following the incident, Johnson’s office began contacting federal, state and local government entities, as well as private companies, to solicit information about the security failures at the rally, the senator’s office said. The preliminary findings are based on the initial information Johnson’s office obtained after the shooting.

The preliminary findings determined that the Secret Service did not attend a security briefing given to local SWAT and sniper teams on the morning of July 13, that local law enforcement said communications were siloed and they were not in frequent radio contact directly with the Secret Service, that local law enforcement notified command about Crooks before the shooting and received confirmation that the Secret Service was aware of the notification and that the Secret Service was seen on the roof of the American Glass Research (AGR) building with local law enforcement following the shooting.

The investigation also found that photos of the shooter were sent to the ATF for facial recognition and that local law enforcement said the Secret Service was initially not planning on sending snipers to the rally.