A string of law enforcement officials took the stand on the third day of testimony Friday in the capital murder trial of Eddie Routh.

Texas Ranger David Armstrong told jurors he conducted the search at the home of Routh's parents following his arrest.

Routh is accused of killing Chris Kyle and Chad Littlefield at a shooting range at Rough Creek Lodge in February 2013.

Armstrong testified that pipes, bongs, a grinder and a "loose green substance" were found on a desk and the floor of the guest bedroom at the home in Lancaster. Routh's parents were out of town at the time of the search. 

"We found a ceramic pipe that people use to inhale marijuana, a cylinder looking device called a grinder - and what you do is you can put any leafy substance in it and grind it up," Armstrong said.

Staff Writer Autumn Owens is covering the trial from inside the Donald R. Justice Center and will be Tweeting live updates @aowensETnews.

Stay connected with yourstephenvilletx.com as developments unfold throughout the day.