This is a very popular urban legend here in the Philippines. This was made even more popular when the book, True Philippine Ghost Stories(book 2), published the story. Now whether you believe the story or not, is up to you.

Sasama ka ba???tara...samahan mo ako,at lakbayin natin ang kababalaghan sa... "THE 13th FLOOR"

this is a compilation of ghost stories in many universities here in philippines sent by email

This is a True Story. Nangyari ito sa UNIVERSITY NG ISANG PROBINSIYA. Mas mabuti nang hindi na banggitin yung name ng school. Kwento ng tropa kong si Lhezz Balmores. Enjoy na lang guys. ~ Chillsss.