The suspect arrested in the fatal shooting Charlie Kirk had an "obsession" with the conservative influencer, based on the alleged shooter's digital footprint, FBI Co-Deputy Director Dan Bongino said Monday on Fox News.

Tyler Robinson, a 22-year-old Utah native, is accused of fatally shooting Kirk during an event at Utah Valley University on Sept. 10.

Bongino said the suspect appeared to have exhibited "multiple warning signs."

"I believe co-workers stated he had detached himself when the topic of politics came up and walked away," Bongino said on Fox News.

Bongino said they are looking into whether anyone knew the shooting could happen and didn't alert authorities, referring to online chats Robinson allegedly had about Kirk.

A memorial for Turning Point USA CEO and co-founder Charlie

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