An individual who spiked treats with sedative and distributed them to youngsters at a summer camp in the area has admitted sexual offences against two young males aged nine and 10.
The defendant was arrested after eight children and a grown-up experienced illness at Stathern Lodge in mid-summer.
The 76-year-old, from the Nottinghamshire area, pleaded guilty to a total of 17 charges when he was present at the judicial center on Friday.
Nevertheless, he denied one particular crime he was facing, which was concerning a nine-year-old child.
Ruben was remanded in custody prior to a further hearing on 28 November.
'Candy game'
The prosecutor, presenting evidence, described Ruben's offending to the judicial body.
She explained his victims were disadvantaged youngsters who were participating in a summer program which he operated.
Ruben conducted a "candy game" with the children, Mrs Prior explained, in which he would go into the boys' rooms when they were getting ready for bed and request they to eat sweets "as quickly as they can".
She informed the proceedings the man had played this game with the children "for many years", and youngsters had earlier experienced illness the subsequent day.
She explained the man had been capable of justifying this for many years as the minors being "overwrought by enjoyment", until his family member had suspicions in recently.
Mrs Prior KC added: "This year his family member had suspicions about what was going on, for good reason.
"They decided to investigate in the man's possessions."
The legal counsel explained materials including infant oil, ointment and medical needles were found, and his stepson alerted the law enforcement about his concerns.
She said the defendant continued to play the "treat game" with six children that evening - Saturday 26 July - and they were all sick the subsequent day.
"Authorities" had not arrived by that time," she continued.
The police watchdog, the investigative body, had stated that it was examining the police response of the events.
The prosecutor said the youngsters were struggling to walk due to being ill, so Ruben's stepson called the law enforcement a second time.
She said the defendant then conducted the "sweet game" in a space of five minors.
