An Australian woman found dead overseas after missing for two months had been hospitalized weeks earlier after suffering a miscarriage.

Rehana Parvin, 37, was found dead in Bangladesh in September after traveling there from Queensland with her teenage daughter in June to manage her properties.

It emerged on Sunday that Ms Parvin was hospitalized after a miscarriage on July 3 and that was the last time her family heard from her.

“She was four months pregnant,” her sister Tania Parvin told the alphabet.

Rehana was initially treated at the Nawabganj Upazila Health Complex and then transferred to Dhaka Medical College Hospital, said Nur Mohammad Khan, a police officer investigating her death.

The mother of five was found buried next to a septic tank on her sister-in-law’s property on September 12.

It was reported in Bangladesh that at the time her body was discovered, much of the local property she owned with her husband Awlad Hossain was in Mrs Parvin’s name.

Hossain, 48, traveled to Bangladesh on June 29 and returned to Australia on July 13.

There has been a major twist in the investigation into the overseas murder of Australian Rehana Parvin (pictured).

The deputy superintendent in charge of the investigation said police had applied for an arrest warrant and are seeking Hossain’s extradition from Australia to Bangladesh.

Ms Parvin had spent a night at her parents’ house before traveling to her in-laws’ house after traveling to her home country in June.

His mother reported him missing three days later.

Daily Mail Australia does not suggest Hossain had any involvement in his wife’s death, only that Bangladesh police have requested an arrest warrant.

Parvin’s mother, Irean Akter, said in September that she had “worked hard to educate my daughter and send her to Australia, where she became a citizen.”

“My daughter won and acquired property in Australia,” he said.

“I need help, I need appropriate measures,” said Mrs Akter. ‘Rehana had five children. Five children lost their mother.’

While there is no extradition treaty between Bangladesh and Australia, there is a mechanism for the extradition of people between Commonwealth countries, of which both nations are part.

Hossain’s sister, Papia Akhter, and Amzad Hossain, a man from the village where Parvin grew up, were arrested and confessed to having knowledge of Parvin’s disappearance, local authorities said.

Ms Parvin’s ex-husband Awlad Hossain (pictured) returned to Australia on July 13.

Police officer Khan said Parvin died on July 5 between 8pm and 10pm at Papia Akhter’s house, where his body was found more than two months later.

Mr Khan said ABC News that Mrs. Pavin “was murdered… by pressing a pillow on her face.”

Parvin and Hossain married in Bangladesh before moving to Australia almost two decades ago.

They owned several properties in the Lockyer Valley in southeast Queensland, and Ms Parvin also owned land near Tara and in Bangladesh.

Hossain also owned a house in the Ipswich suburb of Redbank Plains.

The Australian Federal Police said it would “provide an update at the appropriate time.”