PEORIA, Ill. -- In Peoria County court, closing arguments are underway in the Christopher Harris mass murder trial.
Thursday morning Prosecutor Mike Atterberry blasted Harris' claim of self defense.
Atterberry says Jason Harris' testimony and physical evidence show Christopher Harris killed five members of the Gee family.
Jason testified he saw his brother beating one of the victims, Dillen Constant, 14, outside the Gee home in Beason as the teenager laid on the ground.
A pathologist testified Dillen was hit 52 times and lost an enormous amount of blood, potentially becoming immobile.
The prosecutor says "the evidence suggests that was an attack and is absolutely inconsistent with self defense."
Harris is charged with 38 counts of murder in connection with the September 2009 slayings.
The defense is now presenting its closing arguments. Jury deliberations are expected to begin Thursday afternoon.