An individual who laced treats with tranquilliser and gave them to children at a summer program in the area has pleaded guilty to sexual offences against two young males both between nine and ten.
Jon Ruben was detained after eight children and an older person experienced illness at the location in July.
The senior citizen, from Ruddington in Nottinghamshire, confessed to a series of 17 offences when he stood at the judicial center on recently.
However, he denied one of the sexual offences he was accused of, which was against a young boy.
Ruben was held in detention before a further hearing on 28 November.
'Treat game'
Mary Prior KC, prosecuting, described the defendant's actions to the legal proceedings.
She said his victims were disadvantaged youngsters who were staying at a youth camp which he managed.
The man conducted a "sweet game" with the minors, the legal counsel explained, in which he would go into the boys' rooms when they were getting ready for bed and ask them to eat sweets "rapidly".
She informed the proceedings the defendant had conducted this practice with the boys "over an extended period", and youngsters had previously fallen ill the subsequent day.
She explained Ruben had been successful in rationalizing this over a long period as the children being "overwrought by enjoyment", until his stepchild had concerns in recently.
The legal representative added: "This year his stepchild had worries about what was going on, for good reason.
"They decided to investigate in the individual's items."
Mrs Prior KC said items including infant oil, Vaseline and medical needles were located, and his stepchild notified the law enforcement about his suspicions.
She stated Ruben went on to engage in the "candy game" with six youngsters that time - Saturday 26 July - and they were everyone unwell the subsequent day.
"The police had not responded by that time," she continued.
The oversight body, the police conduct office, had stated that it was reviewing Leicestershire Police's handling of the incident.
The legal representative said the children were struggling to walk due to their sickness, so Ruben's stepson notified the authorities a second time.
She said Ruben then engaged in the "sweet game" in a area of five children.
