A search was continuing Thursday for the person who shot and killed Charlie Kirk at an event at Utah Valley University. Kirk, a prominent conservative activist who co-founded the right-wing advocacy group Turning Point USA, was 31.

Authorities have not yet identified or apprehended a suspect nor specified a motive, but on Thursday officials revealed new details about the shooter’s movements, a weapon that was recovered and the investigation.

The Utah Public Safety Department and the Salt Lake City FBI office also posted two images of someone they called a “person of interest,” showing an individual appearing to be wearing a dark long-sleeve shirt, and a hat and sunglasses. It asked for the public’s help in identifying the person.

Officials took two people into custody Wednesday in the wake of the shooting but later said neither was tied to the shooting and both were released.

Here is what we know so far about the ongoing investigation.

Suspect at large

Authorities said the suspect remained at large Thursday and that a manhunt is underway to identify and capture the person responsible. Continues…