Kenneth Christopher McKinstry...was a researcher in artificial intelligence. He led the development of the MISTIC project which was launched in May 1996. He founded the Mindpixel (related LF post) project in July 2000...McKinstry's AI work and similar early death dovetailed with another contemporary AI researcher, Push Singh and his MIT Open Mind Common Sense Project (related LF post). (source)  
By David Kushner.
Strange and sad story
bmajor: I saw this earlier today. It is sad to see two great forward thinkers end it all by thier own hand. Such a waste of talent and skill.