but sheriff leon lott knew they couldn't close the case without thoroughly checking out brett's storytwo of them were dead. so we had to light on him to explain to us what happened. so we listened to everything that he was saying and then we would go back and check it. >> investigators went over brett's account, starting with the moment bryan entered the house. before long, something unusual came to their attention. brett told police he was sitting on the downstairs toilet when he heard the shots ring out. but what if the female crime scene investigators notice this. the toilet seat was up. >> our csi lieutenant is a female, and she made mention of that because it particularly bothered her. >> it takes one to look at this notice that. >> right. >> as they poured over crime scene photos, another small but important detail jumped out. bryan's jim bag with ammunition and an empty magazine clip big visible. >> the unusual thing about it, those items were found on top of the clothing of the items in the. back >> unusual because of what they noticed on the home security video that captured

. >> reporter: overnight, richland county sheriff leon lott telling "today" the bus driver is like ahem they love those kids just like they're their own. >> reporter: officials at fort jackson say the suspect's rifle was a standard issue, but because the suspect is just a few weeks into training, he had not been issued any ammunition they believe that he may have been simply homesick and tried to go home sheinelle? >> my goodness, glad the kids are okay and the bus driver. kerry, thank you. >>> 8:09 we got our news covered. would you all like a boost >> friday boost, yes. >> when you celebrate somebody's birthday at a restaurant, it is not unusual to have the staff come oaf, you know, and they sing happy birthday. this cracker barrel waitress in illinois served up a real to special ending ♪ happy birthday to you ♪ [ applause ] >> wow >> wow >> i kind of wish carson was working today. goodness >> chair turn, she'd have a job. that is talent, wow. someday, it'll be a day that birthday recipient won't forget. someone find her. >> please. >> cracker barrel in illinois. we'll find her >>