Authorities say they have tracked the suspected gunman’s movements before, during, and after the fatal campus shooting that killed conservative activist Charlie Kirk, and have recovered what they believe to be the weapon used.

Officials said the suspect arrived near campus at 11:52 a.m., moved through stairwells to a rooftop, fired from a shooting position, then fled across the roof, jumped from the building, and escaped into a nearby neighborhood. Investigators canvassed the area with witnesses and doorbell cameras.

“We do have good video footage of this individual. We are not going to release that at this time,” an official said, noting forensic technologies are being used to identify the suspect.

Investigators confirmed they recovered a high-powered bolt-action rifle in a wooded area where the shooter fled. The FBI lab will analyze the weapon, along with collected footwear impressions, a palm print, and forearm imprints.

Authorities said more than 130 tips have come in.

"The FBI has brought every resource to bear, and we will continue to do so throughout the course of this investigation,” an official said.