A police officer has described the images found on Welshpool child rapist Tom Piggott's devices as "some of the worst I have seen".

DC Steve Williams was involved into the investigation into Piggott, which led to a jury finding the Welshpool para-swimmer guilty of 10 charges including child rape and child sexual assault after a harrowing trial in Mold this week.

And he has praised the hard work of the investigating team into the case, while describing the difficulty of dealing with the nature of Piggott's offending.

“This investigation has been a massive undertaking for all involved,” DC Williams said.

“From the investigating team, to the digital media investigators, it has been an incredible amount of work, but we’re satisfied it has been worth the effort to get justice for these young victims.

READ MORE: Welshpool para-swimmer found guilty of child rape

“None of this would have been possible without their strength and bravery in coming forward.

“It is their willingness to tell the truth about what Piggott did to them that has meant he has been convicted.

“Piggott showed incredible arrogance in trying to lie his way out of the situation he found himself in as a result of his terrible actions. But the evidence proved too strong. “

Piggott, an aspiring swimmer and swimming coach, was also convicted of possessing 141 videos, 58 of which are in the most serious category, and 29 indecent images, six of which are in the most serious category, found on electronic devices seized from his home following.

DC Williams added: “Some of the images we found on his devices were among the worst I have seen in a long career investigating crimes such as his.”