deo of Kirk's killing. They are not required to present all their evidence and can use secondhand information, or hearsay.

After the hearing concludes, state District Judge Tony Graf must determine if the case should proceed.

Reporters and the public will be allowed to attend after Graf denied a defense request to restrict access.

Kirk's killing drew backlash from his Republican allies, including President Donald Trump, who first announced Robinson's arrest in a Sept. 12 interview on Fox News and said,  I hope he gets the death penalty. 

This week prosecutors need only demonstrate that there are reasonable grounds to believe Robinson killed Kirk. The standard is lower than for a trial, where prosecutors have to prove guilt  beyond a reasonable doubt. 

Authorities have said DNA consistent with Robinson's was found on the trigger of the rifle used to kill Kirk, the fired cartridge casing, two unfired cartridges and a towel used to wrap the rifle.

Robinson's parents had confronted him after authorities released a surveillance photo of the suspect and details about the rifle, authorities have said. His parents convinced him to meet with a family friend, who is a retired sheriff's deputy, who reportedly helped arrange for Robinson to turn himself in.

Prosecutors have said Robinson left a note for his roommate, who was also his romantic partner, that read,  I had the opportunity to take out Charlie Kirk and I'm going to take it.  They also said he wrote to his roommate in a text message about Kirk:  I had enough of his hatred. Some hate can't be negotiated out. 

Defense attorneys unsuccessfully sought to block prosecutors from using recorded statements from Robinson's roommate during the hearing. The defense wanted the roommate to testify in person so Robinson could exercise his right challenge the credibility of witnesses against him. Graf said the time for challenging witnesses would come later.

Before his death, Kirk and the organization he co-founded, Turning Point USA, galvanized the conservative youth vote to help Trump win a second term.

His widow, Erika Kirk, who took the helm of the organization after his death, pushed to maintain public access to Robinson's prosecution when defense attorneys sought to exclude cameras from the courtroom. She forgave Robinson during her husband's memorial service.

She is expected in court throughout the week with her husband's parents, Robert and Kathryn Kirk, according to a person familiar with the situation who spoke on condition of anonymity because they were not authorized to speak publicly.

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Brown reported from Billings, Montana.