Now, a chilling video is spreading online that shows a person running on a nearby rooftop.

The killing of Charlie Kirk has shocked the US and much of the world beyond. The 31-year-old conservative political activist and co-founder of Turning Point America was holding an event at Utah Valley University when he was suddenly shot.

Graphic videos show Kirk slumped in his chair, bleeding heavily. Per the state’s public safety commissioner, Beau Mason, Kirk was taken “by private vehicle” to Timpanogos Regional Hospital, where he died. Two individuals were arrested at the scene, but were later released. A manhunt for the shooter is underway.

“There is an ongoing investigation and manhunt for the shooter,” the Utah Department of Public Safety said in a statement on Wednesday night. They added that they believed it was a “targeted attack.”

“The shooter is believed to have fired from the roof