NYC cop Robert Hugel discovered his parents Jerry , 83 and Marianne Hugel , 80 , dead in their Long Island 's home with 'carbon monoxide poisoning ' The elderly couple was found dead along with neighbor Gloria Greco , 70 , and friend Walter Vonthadden , 76 . It appeared the car was accidentally left running in the garage , but it was unclear for how long , investigators said . Neighbors say the couple were happily married for 60 years .
NYC cop Robert Hugel discovered his parents Jerry , 83 and Marianne Hugel , 80 , dead in their Queens home with 'carbon monoxide poisoning ' The elderly couple was found dead along with neighbor Gloria Greco , 70 , and friend Walter Vonthadden , 76 . It appeared the car was accidentally left running in the garage , but it was unclear for how long , investigators said . Neighbors say the couple were happily married for 60 years .