Help on my friends suicide?

i had a friend to come from calif 3 weeks ago he just kelp talking about the antichrist he read his bible everyday and all nite he thought the mexicans were aliens that when the crash in roswell happened the aliens invaded there bodies and the anti christ was with the mexicans anyway i found him last sunday he had hung himself the neighbor said for 2 hrs he walked around his house reading the bible before he done this i found his bible tore up and he really loved it it has really messed with my heart has anyone heard of any cults or so call religons teaching this please let me know or has anyone heard anything like this.