Utah Gov. Spencer Cox (R) said during several Sunday appearances on news shows that the alleged shooter of Charlie Kirk, Tyler Robinson, is not cooperating with authorities, although his family and roommate are.

“He has not confessed to, to authorities,” Cox told ABC News’s This Week co-anchor Martha Raddatz. “He is, he is, he is not cooperating, but, but, but all the people around him are cooperating. And I think that’s, that’s, that’s very important.”

Robinson, age 22, was arrested on Friday, and is expected to be formally charged on Tuesday.

Cox also clarified several reports that have gone around the media and social media since Robinson was arrested.

"Very different" ideology from his conservative family

On NBC’s Meet the Press, Cox said that Robinson was not a Republican or a conservative, though his family was conservative.

“We can confirm…according to family and people we are interviewing, he does come from a conservative family but his ideology was very different than his family,” he told the show.

Cox also confirmed that Robinson was in a romantic relationship with his transgender roommate, who is transitioning from male to female.

The roommate “did not have any knowledge (of the assassination), was shocked when they found out about it,” Cox said, adding that they have been "very cooperative."

Authorities are still investigating how the roommate's transitioning played into Robinson's motive, but it seems pretty clear that Robinson had anger towards Kirk for comments he had made about transgender ideology.

"It was all joking until . . ."

Cox also confirmed that Robinson joked around with friends on a Discord chat about being the gunman, and then admitted it was really him.

“All we can confirm is that those conversations definitely were happening, and they did not believe it was actually him. It was, it was all joking until, until he, you know, until he admitted that it actually was him,” Cox said.

Robinson had been a "very normal, very smart" young man who attended Utah State University for a semester before dropping out after one semester.

After dropping out, Robinson spent a lot of his time gaming and discovered the “deep, dark internet, the Reddit culture and these other dark places,” Cox said.

More information will be forthcoming when formal charges are filed on Tuesday, Cox said on all the Sunday shows.