A retired Sydney businessman has been arrested in Thailand on charges of posting lurid child-sex stories on internet chat sites used by child-sex offenders. 
Stephen Le Cornu, 62, covered his face as police led him from his house in the Bangkok suburb of Bang Kapi after a raid by more than 40 police late on Tuesday.
Mr Le Cornu declined to comment to Fairfax Media as he was driven away to a police station.
Australian Federal Police agent Glenn Tankard, who witnessed the arrest, said Queensland's paedophile Task Force Argos tipped off Thai authorities two months ago about a person in Thailand who was posting descriptions of sex acts with a child he allegedly knew on chat sites.
Thailand's Department of Special Investigation - Thailand's equivalent of the FBI - allegedly linked the stories and pictures to Mr Le Cornu. Task Force Argos is credited with removing hundreds of children worldwide from abuse situations since it was set up more than four years ago.
Mr Le Cornu, a father of three, including a daughter aged six, faces up to five years' jail if convicted under Thailand's new child pornography laws, which were enacted late last year. Thai authorities say they are giving high priority to identifying and charging child-sex offenders in the country long known as a popular destination for foreign sex offenders.
Mr Le Cornu has been living in Bangkok with his Thai partner after retiring in 2009.