A former reality TV star who allegedly murdered her partner and cut off his head before setting his body alight, has been revealed to be pregnant while in custody.

Tamika Chesser, 34, a former Beauty and the Greek contestant, is accused of killing her boyfriend Julian Story, 39, at their Port Lincoln unit, in South Australia, in June. 

Police allege she decapitated and dismembered Mr Story before attempting to burn his body. His skull was discovered in bushland some six weeks later. 

Chesser is being held at James Nash House, a forensic mental health facility in Adelaide, and is expected to give birth early next year.

She faces charges of murder, interfering with human remains, and assaulting a police officer, with her first court appearance scheduled for December.

It is unclear who the father of the child is, and authorities said Chesser will have access to typical health arrangements from pregnant women in custody.

The update comes as authorities continue to investigate Mr Story’s death, who police allege was killed on June 17, the day after his 39th birthday. 

Chesser is accused of decapitating him and setting his body alight inside the bathroom of their Port Lincoln unit. His head was not found until six weeks later.

CCTV footage captured a woman, dressed in black, walking three dogs a short time after the alleged murder. 

Police allege Chesser is the woman in the footage and that she may allegedly have used the bag to transport Mr Story’s head from the unit.

Premier Peter Malinauskas called the alleged crimes ‘very unique’ and ‘egregious,’ noting the unusual situation of a woman being pregnant in custody.

‘Women who find themselves pregnant while in custody have access to very specific services that are tailored to prison health,’ Malinauskas said. 

 ‘Just as importantly, if not more importantly, the wellbeing of a life that exists in utero is being looked after as well.’

Health Minister Chris Picton confirmed Chesser did not become pregnant while in custody and said strict protocols exist between corrections and health services.

‘There are protocols in place between corrections and mental health, and our health services if someone is pregnant in one of our facilities,’ Picton said.

Mr Story was laid to rest by friends and family in August at a private service at St Mary of the Angels Catholic Church. 

He was remembered as a ‘very talented musician’, a beloved son and ‘a bit of a trickster’.

The 34-year-old’s family has previously released a statement thanking the authorities and community for their sympathies. 

‘We are navigating an unimaginable loss, and your care has brought comfort amid the chaos,’ the family said.

‘Your prayers, presence, and quiet strength mean more than words can say.’

Chesser featured in the second series of the Beauty and the Greek in 2010. She placed second in the show, aired by the Seven Network. 

The former cocktail waitress has also modelled for a number of brands including Target and David Jones and appeared in a number of men’s magazines.

Chesser is next due to appear in court in December.