A 37-year-old man has admitting possessing the indecent images of children aged between ten and 14-years-old.
Troy Helliwell, of Waindale Close, Mount Tabor, pleaded guilty to 21 counts of making indecent photographs of a child relating to 2,959 pictures.
The HGV driver was uncovered when he dropped a USB memory stick at work containing eight of the images in July 2011.
Calderdale Magistrates’ Court heard that it was found by a colleague who looked at the files saved on the memory stick and found the images and confirmation that it did belong to Helliwell.
Police officers arrested Helliwell on July 12, 2011, and seized laptops and computers from his home.
On Helliwell’s personal laptop they found a further 2,951 Level One images of children - the lowest category of indecent photos but the court heard they still showed young children and early teens in sexually provocative poses.
Malcolm Nowell, defending, said the images were found in a deleted items folder which could not be easily accessed.
“There is no suggestion of any distribution of the images,” said Mr Nowell.
Helliwell claimed he was only looking to see what was out there and had begun by searching for landscapes and only found the images when he searched for ‘teen models’.
He claimed to save the pictures to his USB and would then delete them immediately.
After deliberation magistrates decided that they required a pre-sentence report before they could sentence Helliwell.
He was bailed to reappear at Calderdale Magistrates’ Court on Friday November 19.