A person who laced treats with sleeping medication and provided them to youngsters at a summer program in the area has admitted sexual offenses against two boys who were nine and 10.
The defendant was detained after eight youngsters and an older person fell ill at the facility in mid-summer.
The 76-year-old, from the Nottinghamshire area, confessed to a series of 17 offences when he was present at the judicial center on Friday.
Nevertheless, he refused to admit one particular crime he was accused of, which was against a young boy.
Ruben was remanded in custody ahead of a subsequent court date on late November.
'Treat game'
The prosecutor, prosecuting, described the criminal behavior to the judicial body.
She explained his those affected were children from difficult backgrounds who were participating in a summer camp which he operated.
The defendant conducted a "sweet game" with the youngsters, the legal counsel stated, in which he would go into the sleeping quarters when they were settling down and ask them to eat sweets "as quickly as they can".
She informed the proceedings the defendant had played this game with the boys "over an extended period", and children had previously become sick the next day.
She said Ruben had been able to explain this over a long period as the minors being "overwrought by enjoyment", until his stepchild had concerns in recently.
The legal representative stated further: "In the summer" his family member had concerns about the activities, for good reason.
"They chose" to examine in the defendant's belongings."
The legal counsel stated items including baby oil, Vaseline and medical needles were discovered, and his stepchild alerted the police about his concerns.
She said Ruben went on to conduct the "candy game" with six youngsters that evening - that Saturday - and they were all sick the following morning.
"The police had not arrived by that stage," she stated further.
The oversight body, the police conduct office, earlier informed that it was reviewing Leicestershire Police's handling of the situation.
Mrs Prior explained the children were having difficulty walking due to being ill, so the stepson called the police once more.
She explained the defendant then conducted the "sweet game" in a room of five youngsters.
