The man already sentenced to two life terms plus 40 years in federal prison for killing a prominent Democratic lawmaker and her husband appeared Monday in state court to face parallel charges for the same crimes.

Vance Boelter, 59, made his initial appearance before Hennepin County Judge Juan Hoyos in proceedings that had been delayed pending the resolution of his federal case. The hearing comes less than two weeks after his federal sentencing for the murders of former Minnesota House Speaker Melissa Hortman and her husband Mark, as well as the critical wounding of state Senator John Hoffman and his wife Yvette.

The attacks occurred in the Minneapolis area last summer and shocked the state’s political establishment. Boelter pleaded guilty to federal charges in June, approximately one year after the incidents, in exchange for prosecutors agreeing not to pursue the death penalty.

During Monday’s procedural hearing, Boelter made several unusual claims to the court. He stated that over an eight-year period, he had met with various Minnesota elected officials in Washington, including United States Senator Amy Klobuchar. The senator responded swiftly to these assertions.

“We have found no record of my ever meeting or speaking with this murderer who will be spending the rest of his life in prison,” Klobuchar said in an emailed statement. “This is the second time he has falsely brought me into his tormented web and no one should be giving him more attention.”

Boelter pressed the judge on whether the court possessed authority to compel Klobuchar’s testimony, asking, “Or is she above the law?” He also alleged that his rights had been violated during the 14 months he has spent in federal custody.

Judge Hoyos informed Boelter that any arguments concerning his case should be presented at future hearings through his attorney, following proper legal procedure.

The state charges against Boelter carry significant weight. If convicted, he faces a mandatory sentence of life in prison without the possibility of parole. Minnesota abolished capital punishment decades ago, making life without parole the most severe penalty available under state law.

The dual prosecution in both federal and state courts, while potentially appearing redundant, serves distinct legal purposes. Federal charges typically apply when crimes cross state lines or involve federal interests, while state charges address violations of state law. The practice, known as dual sovereignty, has been upheld by courts as constitutional, though it remains controversial in some legal circles.

The case has drawn attention not only for the severity of the crimes but also for the victims’ prominence in Minnesota politics. Former House Speaker Hortman had been a significant figure in state Democratic politics, making her murder a particularly shocking event for the political community.

As the state case proceeds, Boelter will remain in custody serving his existing federal sentences. His next court appearance will be scheduled to address the substantive matters of the state charges against him.

Related: FBI Probes Incendiary Attack on Federal Building Housing Immigration Courts