A judge on P.E.I. described a 24-year-old Charlottetown man's defence as unrealistic in finding him guilty of sexually touching a four-year-old boy.

Jason Thomas Fisher was convicted on two charges: sexual interference and invitation to sexual touching.

The offences took place in June of 2006. Fisher was babysitting the four-year-old and the boy's five-year-old sister at the time. One day, the boy told his mother that on one of the nights Fisher had been taking care of them,the babysitter asked the boy to touch him sexually, and he did. The boy's mother called the police.

Around the same time, Fisher walked into the Charlottetown police station and gave a videotaped confession. He said he felt bad about what happened and wanted to make it right, but when the case went to court, Fisher changed his story.

Fisher said on the night in question, he thought the kids were asleep. He said he was touching himself sexually when the little boy snuck up behind him and grabbed him by the penis. He said the only reason he confessed to police was because the boy's family had threatened to beat him up.

Judge Ben Taylor of the P.E.I. Supreme Court wrote in his decision that many of the details of Fisher's story didn't ring true.

"Instead of being dopey, fussy or frightened, or calling for his mother, as one might expect a little four-year-old boy would if he woke in the middle of the night, according to Mr. Fisher's evidence [the boy] must have silently entered the bedroom and crept up on Mr. Fisher from behind," Taylor wrote.

"This story told by Mr. Fisher is not realistic."

Taylor also wrote there was no evidence that Fisher was threatened, or that police had forced or tricked him into confessing.

In contrast, Taylor described the boy as a credible witness.

"[The boy] had no reason to dislike Mr. Fisher; he played with him and had fun. There is no suggestion [he] had any motive or reason to make anything up about Mr. Fisher," the judge wrote.

"[The boy's] vocabulary and grammar was that of a child. He showed no signs of coaching, did not use words or deal in concepts one would think not appropriate for a child."

Fisher was originally supposed to appear in P.E.I. Supreme Court in October for the verdict, but he failed to appear because he had moved to Nova Scotia.

Fisher voluntarily agreed to be assessed for sexual deviance. He will return to court Feb. 4 for sentencing.