Attorneys for Tyler Robinson, the man accused of assassinatins Charlie Kirk, are seeking to delay his murder trial until 2029.

Robinson's defense team have proposed starting the capital murder trial in the third quarter of 2029, nearly four years after his murder.

They claim they will need several years to prepare for the extraordinarily high-profile death penalty case.

Prosecutors, however, say they could be ready to proceed by October 2027 and have proposed January 31, 2028, as a trial date to avoid proceedings running through Thanksgiving and Christmas.

Kirk's widow, Erika, is now urging the court to reject the defense request and bring the case to trial at the earliest possible opportunity.

"Under the Defendants' proposed schedule, Mr. Kirk's two children, who were one and three at the time he was murdered, will be six and eight years old by the time the trial concludes," her attorney Jeffrey Neiman wrote.

"They will face the uncertainty of this criminal proceeding longer than they had their father in their lives."

Kirk's attorneys criticised the proposed delay as "grossly out of line."

They cited Utah law providing crime victims with the right to a speedy disposition of criminal charges without unwarranted delays caused by defendants.