The FBI has recovered a “bolt-action, high-powered rifle” in a wooded area near an area where the assassin of Charlie Kirk fled, said the bureau’s local field office director on Thursday morning.

The FBI also has “good video footage of this individual” and that the bureau has “tracked his movements,” said FBI Special Agent in Charge Robert Bohls in a news conference.

Law enforcement officials said the suspect they are seeking “appears to be of college age” and “blended in” with students on the college campus.

Kirk was killed with a gunshot from a rooftop at the Utah Valley University campus, where he was speaking on Wednesday, officials said. As the search stretched into a second day, they provided little information about the shooter’s identity, motive, location or evidence and were reviewing grainy security videos of a mysterious person in dark clothing.