>> reporter: ellison, unfortunately no sign of caleb harris as of right now.do know that in addition to searching north padre island where he resided they're looking specifically in and around the area outside his apartment complex according to online records he walked out to get that uber eats order which was completed. according to the app. we do know that corpus christi police are now working with the u.s. coast guard, of course, while his apartment was there on the island, you know he has a bay to the left and ocean to the right, there are massive waterways on either side here, waterways on either side here, ellison, but as of right now no sign of harris. his family growing increasingly desperate, we know we're in touch with them and anticipate to hear from his father later today. ellison morgan what the situation in nashville. >> reporter: new evidence is coming out, almost by the hour, ellison, coming in the form of newly released surveillance footage of that university of missouri student who's on that fraternity trip to nashville. we know that riley st