A person who laced treats with tranquilliser and gave them to minors at a summer camp in the region has admitted sexual crimes against two children both between nine and ten.
The accused was arrested after eight youngsters and a grown-up fell ill at the location in mid-summer.
The 76-year-old, from the Nottinghamshire area, pleaded guilty to a multiple criminal counts when he was present at Leicester Crown Court on the end of the week.
Yet, he disputed a single sexual charge he was charged with, which was involving a nine-year-old boy.
Ruben was held in detention ahead of a further hearing on 28 November.
'Sweet game'
Mary Prior KC, presenting evidence, outlined the criminal behavior to the judicial body.
She explained his victims were disadvantaged youngsters who were participating in a summer camp which he operated.
Ruben played a "treat game" with the children, Mrs Prior explained, in which he would go into the sleeping quarters when they were getting ready for bed and tell them to consume candy "rapidly".
She stated to the judge the man had conducted this practice with the children "repeatedly", and children had previously fallen ill the subsequent day.
She stated Ruben had been capable of justifying this for many years as the youngsters being "overexcited from fun", until his stepson had concerns in recently.
Mrs Prior KC added: "This year his stepchild had worries about the activities, justifiably.
"They resolved" to investigate in the individual's items."
The prosecutor stated objects including infant oil, ointment and medical needles were located, and his stepchild notified the law enforcement about his suspicions.
She explained the man went on to play the "sweet game" with six children that night - Saturday 26 July - and they were all sick the subsequent day.
"Law enforcement" had not arrived by that time," she added.
The oversight body, the Independent Office for Police Conduct, previously told that it was investigating the police response of the events.
Mrs Prior stated the children were struggling to walk due to their condition, so Ruben's stepson notified the authorities again.
She stated the man then engaged in the "sweet game" in a area of five youngsters.
