MINNEAPOLIS (WCCO) — The father accused of killing his three daughters in their River Falls, Wis. home entered an insanity plea on Wednesday, according to officials.

Aaron Schaffhausen previously had a Dec. 14 deadline, set by St. Croix County circuit court Judge Howard Cameron, but failed to enter a not guilty plea by reason of insanity at that time. Kuscinski told the River Falls Journal he hadn’t received all the evidence to make a decision in December.

On Wednesday, John A. Kucinski, Schaffhausen’s attorney, entered the insanity plea in a brief, one paragraph letter to the court in St. Croix County.

Schaffhausen, 35, was charged with three counts of first-degree intentional homicide for the deaths of his girls during a surprise visit back in July 2012, while his ex-wife was at work.

Schaffhausen shared custody of the girls — 11-year-old Amara, 8-year-old Sophie and 5-year-old Cecilia.

Schaffhausen remains in the St. Croix County Jail on a $2 million bond. He’ll be back in court on Thursday for a motion hearing.