Chilling photos posted ahead of woman's killing

(KARK) – Chilling photos posted to social media by an Arkansas woman shortly before her death show her boyfriend pointing a pistol at her head.

Rafael Gonzalez pleaded not guilty on Tuesday to the killing of his girlfriend Stephanie Hernandez.

Gonzalez is accused of killing 21-year-old Hernandez at her North Little Rock home on Sunday.

According to the arrest affidavit, a friend said that Gonzalez "accidentally shot Hernandez" and that he "routinely plays around with a pistol."