A Brisbane man has been arrested following an investigation into the vandalism of Facebook tribute pages for slain children earlier this year.

There was widespread public outrage when tribute pages set up to honour Trinity Bates and Elliott Fletcher were defaced with graphic images posted online including child pornography, prompting police to launch an investigation.

Young life lost ... Elliott Fletcher with his parents. Credit:Facebook

Taskforce Argos detectives this morning charged an unemployed 29-year-old Tarragindi man over the matter.

Elliott Fletcher, 12, a student at St Patrick's College at Shorncliffe, died in February after he was allegedly stabbed by a fellow pupil.