An individual who laced treats with sedative and provided them to minors at a youth camp in the area has admitted sexual offences against two children both between nine and ten.
The accused was arrested after eight children and one adult experienced illness at Stathern Lodge in July.
The 76-year-old, from the Nottinghamshire area, admitted guilt to a total of 17 charges when he was present at Leicester Crown Court on recently.
Yet, he disputed one particular crime he was facing, which was against a young boy.
The accused was held in detention ahead of a further hearing on late November.
'Sweet game'
The legal representative, prosecuting, detailed Ruben's offending to the court.
She explained his targets were under-privileged children who were attending a summer camp which he managed.
The defendant engaged in a "treat game" with the youngsters, Mrs Prior explained, in which he would go into the children's bedrooms when they were preparing to sleep and ask them to ingest treats "rapidly".
She stated to the judge Ruben had engaged in this activity with the children "repeatedly", and children had previously become sick the subsequent day.
She explained the man had been able to explain this repeatedly as the minors being "overexcited from fun", until his stepchild had concerns in recently.
The prosecutor added: "In the summer" his stepchild had worries about the situation, for good reason.
"They decided to examine in the man's possessions."
The legal counsel stated items including infant oil, Vaseline and injection devices were located, and his stepchild contacted the law enforcement about his worries.
She stated the man continued to engage in the "candy game" with six youngsters that evening - that Saturday - and they were all ill the next day.
"Law enforcement" had not arrived by that time," she continued.
The oversight body, the investigative body, had stated that it was investigating Leicestershire Police's handling of the situation.
The prosecutor stated the minors were having difficulty walking due to their sickness, so the stepson contacted the police once more.
She explained Ruben then conducted the "sweet game" in a area of five youngsters.
