The Latest Breaking News from FBI

"Someone in that school knows who he is."

High-profile conservative activist, 31, had recently employed a security detail

The FBI has released a photo of a man, described as "a person of interest" believed to have assassinated conservative activist Charlie Kirk at Utah Valley University, intensifying a nationwide manhunt as investigators piece together the gunman's movements before and after the shooting

Federal investigators revealed how the person who assassinated Charlie Kirk managed to vanish from the scene after opening fire, raising new concerns about security and escape tactics used in public political events.

The FBI is facing mounting pressure over its handling of the investigation into the assassination of conservative activist Charlie Kirk, after releasing two wrongly detained suspects and confirming that the bureau's top official in the region was fired just days before the attack.

He was once one of the FBI's Ten Most Wanted fugitives.

Authorities are searching for what they believe to be a "college-age" suspect.

The suspect who remains unidentified is believed to be of university age and to have acted alone. The FBI believes the assailant jumped off the roof of a building after assassinating Kirk, and fled into a nearby neighbourhood.

Conservative organizer, 31, fatally shot Wednesday while hosting an event at Utah college campus