The 19-year-old Willmar man accused of killing his friend’s grandmother changed his mind during his trial Wednesday and decided to plead guilty to 1st-degree premeditated murder. The trial of Brok Junkermeier was set to resume Wednesday afternoon in Kandiyohi County Court, but Defense Attorney Kent Marshall says that Junkermeier told him Wednesday morning that he wished to plead guilty to murdering 79-year-old Lila Warwick because he didn’t want Warwick’s family or his own to have to endure any more testimony. On Tuesday the jury watched Junkermeier’s taped confession in which he admitted to killing Warwick last July near Willmar after forcing her to write him a check for $1,500. He’s accused of carrying out the crime with Warwick’s grandson, 18-year-old Robert Warwick, who is also charged with 1st-degree murder. His trial is not yet scheduled. Junkermeier is now expected to be sentenced to life in prison without parole next Wednesday.