Editor's Note: A previous version of this story incorrectly attributed statements Eddie Ray Routh allegedly made to his brother-in-law as statements that he made to detectives. NBC 5 regrets the error.
Police are expected to release new details on what evidence they found when the searched Eddie Ray Routh’s home following his arrest for allegedly murdering decorated veteran Chris Kyle and his friend Chad Littlefield.
Lancaster police could release that crucial new information sometime Wednesday afternoon, or perhaps Thursday.
According to a Texas Ranger search warrant, Routh's brother-in-law told police the day of the shooting that Routh said he killed two people while out shooting target practice because "he couldn't trust them so he killed them before they could kill him." The brother-in-law told police that Routh said he couldn't trust anyone and that everyone was out to get him, according to the document.
Routh is an Iraq war veteran, and his attorney and family said he suffers from post-traumatic stress disorder and other mental illnesses.
Routh has been placed on suicide watch while in jail.
Meanwhile, the memorial services for the victims have been organized.
Chris Kyle's service will be held Feb. 11 at Cowboys Stadium in Arlington at 1 p.m.
Kyle’s family toured the Texas State Cemetery in Austin on Tuesday, where Kyle could be buried. They flew on a small jet at the personal invitation of Governor Perry.
Memorial services for Chad Littlefield will be at the First Baptist Church in Midlothian on Friday.
A flag line and processional is scheduled to move from the church to Mount Zion Cemetery for Littlefield's burial, according to an e-mail sent to NBC 5.