An individual who laced sweets with sedative and provided them to youngsters at a summer camp in the area has admitted sexual offences against two boys both nine and 10.
The accused was detained after eight children and an older person experienced illness at Stathern Lodge in mid-summer.
The 76-year-old, from Ruddington in Nottinghamshire, admitted guilt to a multiple criminal counts when he appeared at Leicester Crown Court on recently.
Yet, he disputed a single sexual charge he was charged with, which was concerning a young boy.
The accused was remanded in custody ahead of a further hearing on late November.
'Candy game'
The legal representative, handling the case, described Ruben's offending to the judicial body.
She stated his those affected were under-privileged children who were attending a youth camp which he managed.
Ruben played a "sweet game" with the minors, the prosecutor explained, in which he would access the boys' rooms when they were getting ready for bed and ask them to ingest treats "as fast as possible".
She told the court the man had played this game with the young males "repeatedly", and minors had earlier experienced illness the following morning.
She said the defendant had been successful in rationalizing this repeatedly as the children being "overexcited from fun", until his stepson had worries in recently.
The legal representative continued: "In the summer" his family member had suspicions about the situation, justifiably.
"They chose" to examine in the man's possessions."
Mrs Prior KC said objects including lubricant, petroleum jelly and injection devices were found, and his family member contacted the authorities about his worries.
She explained the man proceeded to conduct the "candy game" with six youngsters that time - Saturday 26 July - and they were everyone unwell the following morning.
"The police had not responded by that stage," she stated further.
The police watchdog, the police conduct office, had stated that it was investigating Leicestershire Police's handling of the events.
Mrs Prior stated the youngsters were struggling to walk due to their condition, so Ruben's stepson notified the authorities again.
She explained the man then engaged in the "treat game" in a area of five minors.