A man who contaminated sweets with tranquilliser and distributed them to youngsters at a youth camp in the area has admitted sexual crimes against two young males aged nine and 10.
The accused was detained after eight children and an older person became sick at the facility in July.
The 76-year-old, from the Nottinghamshire area, pleaded guilty to a series of 17 offences when he stood at Leicester Crown Court on recently.
Yet, he refused to admit a single sexual charge he was charged with, which was involving a nine-year-old child.
The accused was held in detention before a further hearing on late November.
'Treat game'
The legal representative, prosecuting, detailed the defendant's actions to the court.
She stated his victims were disadvantaged youngsters who were attending a summer camp which he operated.
The defendant conducted a "sweet game" with the minors, Mrs Prior stated, in which he would go into the boys' rooms when they were getting ready for bed and ask them to ingest treats "rapidly".
She stated to the judge the man had engaged in this activity with the boys "over an extended period", and youngsters had previously become sick the subsequent day.
She explained Ruben had been capable of justifying this for many years as the children being "overwrought by enjoyment", until his stepchild had worries in recently.
The legal representative stated further: "This year his family member had concerns about what was going on, for good reason.
"They decided to examine in the individual's items."
Mrs Prior KC explained objects including lubricant, Vaseline and injection devices were discovered, and his stepchild contacted the police about his concerns.
She explained the defendant went on to conduct the "sweet game" with six youngsters that time - Saturday 26 July - and they were everyone unwell the following morning.
"Authorities" had not arrived by that stage," she stated further.
The oversight body, the investigative body, earlier informed that it was investigating law enforcement's management of the situation.
The legal representative stated the children were struggling to walk due to their sickness, so Ruben's stepson notified the law enforcement once more.
She said the defendant then played the "sweet game" in a room of five youngsters.
