A mother who drowned her two young sons in a bathtub in Canada has taken her own life five months after being deported back to Australia.
Allyson McConnell had been living in her home town of Gosford, on the NSW central coast, after an early release from a Canadian psychiatric hospital in April this year.
Ms McConnell, 34, had served 10 months of a six-year jail term for the manslaughter of her sons Connor and Jayden.
Her body was discovered lying on rocks underneath Brian McGowan Bridge in West Gosford on Wednesday after being spotted by a member of the public.
"The woman will not be formally identified until later this week, however police believe it is a 34-year-old from Gosford," police said in a statement.
A post mortem will be carried out but the death is not believed to be suspicious.
Ms McConnell, who had been living with her elderly mother Helen Meager, had been the subject of intense media attention when she arrived back in Australia.
"At the moment I'm just trying to get over what has happened," she said at the time.
"It's been as upsetting for me as much as everyone else involved. I think about them every single day."
At her trial in March 2012, the Australian-born mother admitted to being severely depressed and suicidal when she drowned two-year-old Connor and 10-month-old Jayden in Millet, Alberta, in February 2010.
She had been in the middle of a messy separation from her Canadian husband, Curtis McConnell, who she had met in 2006 while working at a ski resort.
Ms McConnell also told her trial that she was molested and fell pregnant to her father aged 15, lost the baby through miscarriage, had other miscarriages and attempted suicide many times.
She told the court she would try to kill herself again because she didn't want to get well.
Ms McConnell was found guilty of two counts of manslaughter but the judge found her not guilty of second-degree murder because there was enough "reasonable doubt that she had the specific intent to kill her children".
The leniency of the ruling and her sentence angered her estranged husband and prosecutors, prompting Mr McConnell to file a $A900,000 civil suit against his wife.
Prosecutors wanted her to remain in Canada while they appealed but Canadian immigration authorities said she could leave the country.
She was facing extradition if the appeal for a stiffer sentence succeeded.
Ms McConnell's mother described her daughter as a victim.
"She's not well and we still have the appeal to get through. Right now we want to get her better, and settled," Ms Meager said earlier this year.
* Readers seeking support and information about suicide prevention can contact Lifeline on 13 11 14.