“It’s with deep sadness that Tony, Wade, and I share the sudden passing of our close friend and partner, Dan Rivera,” read a Facebook post by the NESPR.

Dan Rivera, a paranormal investigator and one of the handlers of the allegedly haunted Annabelle doll that inspired “The Conjuring” film franchise, died last Sunday in Gettysburg, Pennsylvania.

According to the society's website, Rivera worked on paranormal research and investigations for over 10 years, adding that he was born and raised in Bridgeport, Conn and later served in the U.S. Army...