Bangkok: An Australian woman who is eight weeks pregnant has been sentenced to 10 months' jail on charges of publishing seditious articles in Singapore, the stiffest sentence ever imposed for the offence in the city-state.

Ai Takagi, a 23-year-old Australian of Japanese descent from Brisbane, apologised to the people of Singapore for the harm she had caused for posting comments on her popular website The Real Singapore.

"I know that the harmony which Singapore enjoys today requires careful and continuous efforts on the part of everyone, citizens and visitors alike, to maintain," Takagi told a court on Wednesday, according to the Straits Times.

"I sincerely apologise for the harm I have caused through my actions."