Behind the story

In September 7, 2010 a long post by the YouTuber named " Jadusable." ( Real name is Matt) Had bought a shady cartridge from a Old creepy man from a garage sale, of Legend of Zelda: Majoras Mask, after his friend gave him a nintendo 64. Throughout playing the game he soon found out that a spirit named " BEN" was haunting him. As he went back to ask questions to the Old man, he notices he's gone. He moved. He then ask a neighbor, and this is what happened.
"I should have asked from the beginning - who was Ben? The man's expression turned grim and I learned that four doors down around eight years ago on April 23 - the man informed me that it was the same day as his anniversary, that's how he knew the specific date - there was an accident with a young boy named Ben in the neighborhood. Shortly after his parents moved, and despite any further attempts to talk to the man to get more information, he wouldn't divulge anything else."
What was this accident? How old was BEN when he died? When did he die? And most of all... who drowned him? or...did he drown himself?