The person suspected of shooting and killing conservative activist Charlie Kirk at an outdoor event at Utah Valley University was college-aged and wearing dark clothing, law enforcement officials said Sept. 11.

Law enforcement officials said they had images that showed the face of the man they believed killed Kirk, but were not releasing them yet.

After that news conference in Utah, the FBI released images of a man it called a “person of interest.” That person was shown wearing a dark long-sleeved shirt emblazoned with an image of the U.S. flag and a bald eagle. The man was wearing sunglasses and a dark ballcap.

Kirk, who led the Phoenix-based Turning Point USA political non-profit, was making the first stop on a fall tour of college campuses when he was shot and killed Sept. 10.

The shooter was on the roof of a nearby building, Beau Mason, commissioner of the Utah Department of Public Safety, said at the news conference. After the shooting, the person jumped off the roof and ran into a nearby neighborhood, Mason said.

The man “blended in well” with the college-aged crowd, Mason said.

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Officials at that news conference said the man was wearing dark clothes.

Mason said officials had tracked the movements of the shooter before and after the shooting, partly using footage from home security cameras.

FBI Special Agent in Charge Robert Bohls said, “We’re not sure how far he has gone yet.”

The weapon, a bolt-action rifle, was found in a wooded area near the campus, officials said.

This article originally appeared on Arizona Republic: What we know about Charlie Kirk assassination suspect