Babysitter sole suspect in Vic baby death

There has only ever been one suspect in the death of 10-month-old Chloe Murphy, a Victorian inquest has heard.

Chloe Murphy's life support was switched off in December 2010, two days after was left in Ketapat Jenkins' care at the babysitter's home in Kensington.

The lead investigator into her death has told the Victorian Coroners Court medical evidence points to Chloe being critically injured when she was with Mrs Jenkins.

"It became clear that the injuries sustained occurred during Ketapat Jenkins watching over the child," Detective Leading Senior Constable Justin Tippett said on Wednesday.

Mrs Jenkins was found not guilty of child homicide in 2014.

She was excused from giving evidence to the inquest on Tuesday after her barrister objected on the ground of self-incrimination.

Det Snr Const Tippett said the homicide squad had investigated Chloe's parents, Anthony and Phurithee Murphy, but did not suspect them of hurting their daughter.

"Ketapat Jenkins has been the only suspect for the death of Chloe," he said.

The couple say they found their daughter limp and unresponsive when they picked her up from Mrs Jenkins' home on December 3, 2010 so they rushed her to the Royal Children's Hospital.

Doctors found Chloe had a significant brain injury as well as a fractured skull and arm, and eye haemorrhages.

A panel of nine medical experts told the inquest this week Chloe's injuries were probably non-accidental and had occurred after the baby was dropped off.

They were consistent with Chloe's arm being grabbed and twisted, the baby being shaken and then thrown against the floor or a wall, the experts found.

It was also possible, but less likely, Chloe was injured in a fall down the stairs while in a walker or her carer's arms, or that she fell or was thrown from the first floor.

A close friend of Mrs Jenkins gave evidence on Wednesday about talking to the babysitter after Chloe was hospitalised.

"She sounded frightened and said she had looked after Chloe that night," Suparat Charuchinda said through a Thai interpreter.

But Mrs Jenkins has always denied dropping the baby, the woman said.

"She said that nothing like this happened during the time in her home, in her care," Mrs Charuchinda told Coroner Jacqui Hawkins.

The inquest has been adjourned until Thursday.