A person who laced treats with sedative and provided them to children at a summer camp in the area has admitted sexual offences against two children who were between nine and ten.
The defendant was taken into custody after eight children and an older person fell ill at the facility in mid-summer.
The elderly man, from the Nottinghamshire area, pleaded guilty to a series of 17 offences when he appeared at the courthouse on recently.
However, he denied one particular crime he was facing, which was concerning a nine-year-old child.
The accused was held in detention ahead of a subsequent court date on late November.
'Candy game'
The prosecutor, prosecuting, outlined Ruben's offending to the judicial body.
She said his those affected were disadvantaged youngsters who were staying at a summer program which he operated.
Ruben engaged in a "candy game" with the children, the prosecutor explained, in which he would enter the sleeping quarters when they were settling down and request they to consume candy "rapidly".
She stated to the judge the defendant had played this game with the children "over an extended period", and youngsters had earlier experienced illness the next day.
She stated the defendant had been able to explain this for many years as the children being "overexcited from fun", until his family member had worries in recently.
Mrs Prior KC added: "In the summer" his family member had suspicions about the activities, justifiably.
"They chose" to have a look in the defendant's belongings."
The prosecutor explained objects including infant oil, ointment and syringes were located, and his stepchild contacted the law enforcement about his worries.
She explained the defendant went on to conduct the "treat game" with six boys that night - that Saturday - and they were all sick the next day.
"Law enforcement" had not gone out by that stage," she continued.
The police watchdog, the investigative body, previously told that it was investigating law enforcement's management of the situation.
The prosecutor stated the youngsters were unable to walk properly due to being ill, so Ruben's stepson contacted the law enforcement again.
She stated the defendant then engaged in the "sweet game" in a room of five minors.