A person who contaminated treats with tranquilliser and distributed them to youngsters at a youth camp in the area has admitted sexual offences against two young males aged between nine and ten.
The accused was detained after eight children and an older person fell ill at the location in July.
The senior citizen, from that region, admitted guilt to a total of 17 charges when he appeared at the judicial center on recently.
Nevertheless, he refused to admit one of the sexual offences he was facing, which was concerning a young boy.
Ruben was remanded in custody ahead of a subsequent court date on late November.
'Candy game'
The prosecutor, presenting evidence, described the defendant's actions to the court.
She explained his those affected were under-privileged children who were attending a summer camp which he managed.
Ruben engaged in a "candy game" with the minors, the legal counsel said, in which he would go into the sleeping quarters when they were getting ready for bed and request they to consume candy "as fast as possible".
She told the court Ruben had engaged in this activity with the young males "repeatedly", and youngsters had previously become sick the following morning.
She said the defendant had been successful in rationalizing this repeatedly as the youngsters being "overstimulated by activities", until his stepchild had suspicions in recently.
The prosecutor stated further: "Recently" his family member had concerns about the situation, with valid cause.
"They decided to examine in the defendant's belongings."
Mrs Prior KC explained materials including baby oil, Vaseline and medical needles were found, and his stepson alerted the police about his suspicions.
She said the man continued to play the "candy game" with six boys that time - Saturday 26 July - and they were all ill the following morning.
"The police had not gone out by that point," she added.
The police watchdog, the investigative body, earlier informed that it was investigating Leicestershire Police's handling of the situation.
The legal representative stated the children were struggling to walk due to being ill, so Ruben's stepson contacted the police once more.
She explained Ruben then engaged in the "sweet game" in a room of five children.