Victorian Man Jailed For Killing Girlfriend's Baby While She Was At Work

A Victorian man who killed his girlfriend's baby boy has been sentenced to eight-and-a-half-years' jail.

Jesse Vinaccia, 26, was found guilty of child homicide in June after he shook or manhandled 17-week-old Kaleb in January 2016 while his then-girlfriend was at work.

Vinaccia had moved in with young mother Erin Baylis-Clarke and her newborn only a few weeks before the incident.

Erin Bayliss-Clarke (right), the mother of Kaleb Baylis-Clarke, arrives at the Supreme Court of Victoria in Melbourne. Image: AAP

Kaleb died in hospital from severe bleeding of the brain on January 30, a week after Vinaccia found the child unresponsive in his cot.

After the baby's death, he told police he had "put him down in the cot a bit hard" after arguing with the boy's father via Facebook.

Vinaccia on Monday was sentenced to eight-and-a-half years' jail with a non-parole period of at least five-and-a-half years.