More details emerge about suspect in Highland, Park Illinois Fourth of July shooting | Nightline
With a suspect in custody, investigators search his social media accounts looking for clues that might point to motive. And a previous run-in with authorities prompting more questions. WATCH NIGHTLINE EPISODES: https://abc.go.com/shows/nightline ALSO AVAILABLE ON HULU: https://hulu.tv/2wSmSrZ #nightline #massshootings #guncontrol #gunviolence #illinois #highlandpark #crime #abcnews
