Charlie Kirk assassination suspect under 'special watch' in custody, being kept in separate housing unit

The process may take several days, the sheriff's department said.

Once cleared, Robinson will continue with the classification process to determine where he will be housed while in custody.

The department noted that the "special watch" status is done for various reasons, including what type of crime a suspect is booked for, behavioral issues, violent behavior and suicidal comments made during the arrest.

The sheriff's department said it has been made specifically aware of any suicidal comments or concerns regarding Robinson.

A law enforcement source previously told Fox News Digital that Robinson's father, who ultimately turned him in to authorities, told the FBI that he recognized his son from surveillance video images the FBI had released during the manhunt.

The source told Fox News Digital that when Robinson arrived at his father's home, he said he wanted to kill himself. The source told Fox News Digital that the father spoke with a minister the family knew before turning in his son.

Utah Gov. Brian Cox told ABC News on Sunday morning that Robinson was not cooperating with authorities while in custody.

"He has not confessed to authorities. He is not cooperating, but all the people around him are cooperating. And I think that's, that's, that's very important," Cox told ABC News.

The governor said that Robinson's family members and his romantic partner, a man who is transitioning from male to female, are cooperating with authorities. He added that those who know the 22-year-old say he was "deeply indoctrinated with leftist ideology."

Fox News' Alexandra Rego and Fox News Digital's Brooke Singman and Anders Hagstrom contributed to this report.