A federal judge in central Illinois will continue vetting would-be jurors at the death penalty trial of a former University of Illinois student charged with killing a visiting Chinese scholar.

Tuesday will be the second day of a process to pick a jury to hear evidence against 29-year-old Brendt Christensen. Jury selection is expected to last into next week.

Those who categorically oppose capital punishment or who believe it should be imposed on someone convicted of killing without expectation can’t serve as jurors in federal death-penalty cases.

FILE - This photo provided by the Macon County Sheriff's Office in Decatur, Ill., shows Brendt Christensen. Jury selection starts Monday, June 3, 2019 in Peoria, Ill., for the federal trial of Christensen in the 2017 disappearance and suspected killing of Yingying Zhang, a visiting scholar from China whose body hasn’t been found.  (Macon County Sheriff's Office via AP, File)
FILE – This photo provided by the Macon County Sheriff’s Office in Decatur, Ill., shows Brendt Christensen. Jury selection starts Monday, June 3, 2019 in Peoria, Ill., for the federal trial of Christensen in the 2017 disappearance and suspected killing of Yingying Zhang, a visiting scholar from China whose body hasn’t been found. (Macon County Sheriff’s Office via AP, File)

Twenty-six-year-old Yingying Zhang disappeared June 9, 2017, as she ran late to sign an apartment lease off campus. Prosecutors say Christensen lured her into his car and later killed her.

FILE- In this Nov. 1, 2017 file photo, Ronggao Zhang, left, and Lifeng Ye, display a photo them with their missing daughter, Yingying Zhang, in Urbana, Ill. Almost two years after their daughter disappeared from the University of Illinois campus, the parents of visiting Chinese scholar Yingying Zhang are back in Champaign-Urbana for the trial of her accused killer. Former Illinois student Brendt Christensen is charged with  Zheng, whose body hasn't been found. He pleaded not guilty and his trial is set to begin Monday, June 3, 2019. (AP Photo/Michael Conroy File)
FILE- In this Nov. 1, 2017 file photo, Ronggao Zhang, left, and Lifeng Ye, display a photo them with their missing daughter, Yingying Zhang, in Urbana, Ill. Almost two years after their daughter disappeared from the University of Illinois campus, the parents of visiting Chinese scholar Yingying Zhang are back in Champaign-Urbana for the trial of her accused killer. Former Illinois student Brendt Christensen is charged with Zheng, whose body hasn’t been found. He pleaded not guilty and his trial is set to begin Monday, June 3, 2019. (AP Photo/Michael Conroy File)