An individual who laced treats with tranquilliser and distributed them to minors at a summer camp in the area has confessed to sexual offences against two children both between nine and ten.
The accused was taken into custody after eight youngsters and an older person became sick at the facility in July.
The 76-year-old, from the Nottinghamshire area, confessed to a series of 17 offences when he appeared at Leicester Crown Court on Friday.
However, he refused to admit one of the sexual offences he was charged with, which was concerning a young boy.
Ruben was held in detention ahead of a subsequent court date on late November.
'Candy game'
The prosecutor, presenting evidence, detailed the criminal behavior to the legal proceedings.
She stated his those affected were under-privileged children who were attending a summer camp which he operated.
Ruben conducted a "treat game" with the youngsters, Mrs Prior said, in which he would access the boys' rooms when they were getting ready for bed and ask them to ingest treats "as quickly as they can".
She stated to the judge the man had played this game with the young males "repeatedly", and minors had previously fallen ill the subsequent day.
She explained the defendant had been able to explain this repeatedly as the children being "overstimulated by activities", until his stepson had worries in recently.
The prosecutor stated further: "In the summer" his family member had worries about the situation, with valid cause.
"They chose" to examine in the defendant's belongings."
The legal counsel explained objects including lubricant, petroleum jelly and injection devices were discovered, and his stepson contacted the police about his concerns.
She explained Ruben proceeded to engage in the "treat game" with six boys that night - Saturday 26 July - and they were everyone unwell the next day.
"Authorities" had not arrived by that stage," she added.
The oversight body, the investigative body, previously told that it was investigating law enforcement's management of the events.
Mrs Prior said the youngsters were unable to walk properly due to their condition, so Ruben's stepson notified the police a second time.
She said the man then engaged in the "sweet game" in a space of five youngsters.
