This man told me his a relative of the person who own the contact #: 1512937419? Before the #: 0012673684252 had Viber account when he told me his cousin was sick &asked help but when they received the money that they borrowed to me he log out his viber account & he didn't replying my messages until now this is his address where was I sent the money thru western union : 89 LOVORN ROAD LOUISVILLE MISSISSIPPI 39339 USA PLEASE HELP ME TO REPORT TO THE AUTHORITIES & CATCH HIM PLEASE THANK YOU.

You should never send money to someone you don't know - especially someone you've met online only.  All I can suggest is report him to the police and also report him to Viber, and Western Union.