Investigators are now going beyond Long Island, New York, searching the suspect's property in South Carolina and exploring any possible connections to unsolved cases in Nevada. WATCH the ABC News Livestream: bit.ly/3rzBHum SUBSCRIBE to ABC News: bit.ly/2vZb6yP WATCH MORE on abcnews.go.com LIKE ABC News on FACEBOOK: facebook.com/abcnews FOLLOW ABC News on TWITTER: twitter.com/abc #ABCNews #gilgobeach #unsolvedcases #investigation #killer