up? >> absolutely. >> reporter: just to see if maybe he did this. >> absolutely. >> it actually took awhile for me to calm down at the very beginning because my mind's all over the place. and then once i wrap my mind around, okay, let me just go ahead and give them this. get this knocked out of the way, then they can actually get on with the investigation. >> reporter: detectives wanted to know where he was all day. roger had a good alibi. >> he had a solid alibi. yes. his son was with him all the time. he had left his house very early and stopped at a convenience store where he saw friends and talked to them. and then when he got to work, obviously, his co-workers, his supervisors saw him. >> reporter: also backing up roger's alibi was his brother rodney. he told detectives he helped roger jump start his truck early that morning and watched him and triston leave. detective steve munoz. >> he said that they were able to crank up the truck, get it going. and as he pulled away, he says that he did see roger also pull off from the driveway.