Who was Rey Rivera?

Rivera went missing from his residence on May 16, 2006, after receiving a phone call from the Agora Publishing switchboard, according to a guest staying at the Rivera home at the time.[10][c] After several days of searching for clues on Rivera's whereabouts, his wife's parents found his car located in a parking lot off of Saint Paul Street in Mount Vernon near his workplace. Rivera's coworkers went to the top of a parking structure near where the car was discovered, and noticed a hole in the roof of the south wing of the Belvedere Hotel. Police soon discovered Rivera's partially decomposed body inside the conference room under the roof's hole.[2]