An eight-year prison sentence has been handed down to a man who admitted making pornographic videos of his six-year-old nephew being sexually assaulted by the boy's own father.

The 27-year-old, who is originally from Eastern Europe but has been living in Ireland for some years, pleaded guilty at the circuit court to four counts of producing child pornography between 2014 and 2015.

*Please note some readers may find this content disturbing*

The court heard this week that the accused did not take part in the abuse on the six-year-old boy, who is profoundly disabled, but video-recorded it as his brother was raping and sexually assaulting the boy.

The accused's brother has already been dealt with in the Central Criminal Court, where he received a 20-year sentence for rape.

The abuse and pornography were discovered after an international investigation into child pornography which involved police forces in Australia and New Zealand as well as Europol and Interpol.

Gardaí and the HSE raised the accused's brother's home in Co Tipperary in March of last year and found computer equipment there, and at an industrial unit used by his brother, which contained over 12,000 image files and 68 video files of child pornography.

The court heard that the accused's brother was the "main offender" in this case and that only some of the files found were produced by the accused.

Judge Thomas Teehan imposed a 10-year prison term on each of the four counts, to run concurrently, suspending the last two years in light of the accused's guilty plea and co-operation with gardai.

The judge said he could not remember "more repulsive facts outlined to a court than the facts in this case".

The six-year-old victim had been subjected to "depraved acts perpetrated by his father and recorded by his uncle" and it was difficult to imagine a more extreme example of such violations.

*If you have been affected by anything in this post you can contact Childline on 1800 66 66 66 or The Dublin Rape Crisis Centre on 1800 77 88 88*