More than 300 potential jurors in the federal sentencing hearing of convicted murderer and kidnapper Joseph Duncan have been told that the proceedings will not resume until late June.

U.S. District Judge Edward Lodge on Tuesday ordered a second mental evaluation of Duncan as part of the court’s determination of whether he should be allowed to act as his own attorney. The extended delay means that jurors originally expected to serve from April to May will be allowed to go about their business or vacations before they call in for instructions June 23. Lodge could send Duncan to the federal Bureau of Prisons in Seattle, which does intensive mental evaluations that include a 30- to 45-day monitoring period.

Duncan faces a possible death penalty for the 2005 kidnapping and molestation of Dylan Groene, 9, and his then-8-year-old sister Shasta, and killing Dylan. Shasta was rescued from Duncan seven weeks after Duncan murdered the children’s mother, mother’s fiancé and teenage brother in order to kidnap the children from the family’s Coeur d’Alene-area home.

Duncan faces the death penalty in three of the ten charges he pleaded guilty to in December in the federal indictment regarding the crimes against the two children.