A creep stole pictures of women from Facebook and posted them onto a kinky adult website, a court heard on Monday.

Ryan Mochrie superimposed the face of one of his "victims" onto the body of another women who was having sex.

Mochrie, 23, copied "perfectly innocent" photos of his victims, three women aged 16 to 20, and uploaded them to the messaging board, where other users added sexually explicit comments.

Falkirk Sheriff Court was told that a major police investigation was launched last year after 18 females from the Falkirk area contacted police to complain that their faces had been uploaded without their permission to the sexually explicit website.

The site has been described by some web commentators as at the centre of a disturbing trend in the "trolling" of women.

Its purpose is to provide real-life images which users download, print out, and use as porn.

Prosecutor Samantha Brown said that three pictures on the website were identified as having been posted by someone with the username FalkirkLad.

After local publicity, Mochrie walked into Falkirk Police Station and identified himself as "FalkirkLad".

Ms Brown said: "One of the images from Facebook was altered, and it was the altered image that was posted on the website. It was sexual. The female's face had been superimposed on an alternative sexually-explicit picture. It was a picture of her face imposed on a picture of another female engaging in sexual intercourse.

"The other pictures were not sexually explicit, but were posted on a website for people who enjoyed sexually explicit images.

"This obviously caused these females upset."

It is understood that a number of other, tampered-with, images of women from the Falkirk area were uploaded by another user, who has not been identified.

Mochrie, formerly of Denny, near Falkirk, now of Kilsyth, pleaded guilty to causing a breach of the peace by posting the images last year.

Summary Sheriff Derek Livingston continued the case until Friday for more details.

He said: "I have heard a partial narration - I will continue the case so it can be clarified."

He told Mochrie's agent, Kevin Douglas, that he would also adjourn consideration of the question of whether there was a "significant sexual element" to the breach of the peace charge.

If he decides there is, Mochrie will automatically be placed on the Sex Offenders' Register.