Authorities have issued their first search warrant to seek access to an iPhone that was found next to the suspect’s body and hope to find clues to his motive for the attack on Robb Elementary School. WATCH THE FULL EPISODE OF 'WORLD NEWS TONIGHT': https://bit.ly/3uHCDO5 WATCH OTHER FULL EPISODES OF WORLD NEWS TONIGHT: http://abc.go.com/shows/world-news-tonight WATCH WORLD NEWS TONIGHT ON HULU: https://bit.ly/3iQLwPp #massshooting #uvaldetexas #robbelementaryschool