A document filed by the state of Texas casts new light on case against the man accused of killing his former girlfriend.
Terrance Black is charged with capital murder in the 2011 death of Frisco fitness instructor and single mother Susan Loper.
According to the eight-page filing, Black allegedly told Loper: "You killed my kid. I'm going to kill you someday," or "words to that effect."
Whether or not Loper was pregnant prior to her slaying has not been confirmed.
Black's defense team has requested Loper’s medical records, including any possible abortions, their dates and known father(s).
The state's filing also details years of failed relationships that allegedly escalated into violence.
Black allegedly shook a former girlfriend in Georgia in 1995 and stopped her from calling 911, the court document said. The filing also said Black wrote the word "slut" on her house.
Prosecutors also said Black terrorized a Frisco woman from 2004 to 2005 after she broke off their relationship. The court filing says he would show up at her window unannounced and uninvited and would repeatedly call and send text messages such as, "I'm outside."
According to the state, Black went on to stalk Loper from 2006 to 2011. The filing says he tampered with the gate security device at her home, accessed her email and online dating account without her consent and appeared at her home and work uninvited. The court document also says he would show up at places such frequented.
Black is accused of killing Loper and dumping her body in a remote area of Frisco off the Dallas North Tollway. After Loper was killed, Black fled the state and was later arrested by park rangers after jumping into the Grand Canyon.
Black, who was seriously injured after his jump, remains in the Collin County jail.
The state's filing says Black tried to commit suicide in 1995 by taking pills.
Black's trial is to begin in August. He is charged with capital murder but is not facing the death penalty.
NBC 5's Ellen Goldberg contributed to this report.