The death of a baby girl is being treated as suspicious, with a man and a woman being questioned by police, just a day after another baby girl was found dead on a beach.
Police say a woman, 35, and a man, 37, are assisting with their inquiries into the death on Tuesday of the four-month-old infant from the Logan District.
It's understood the pair are not the baby's parents, but have a familial connection to the little girl.
She was taken to Queensland Children's Hospital on Monday morning with life-threatening injuries and died there on Tuesday.
Detectives from the Logan Child Protection and Investigation Unit as well as homicide detectives are investigating.
They are waiting on the results of an autopsy and toxicology tests.
The man and woman have not been charged.
It comes just a day after another baby girl was found dead on a Gold Coast beach in a separate incident.
The nine-month-old's body was found washed up on the beach at Surfer's Paradise on Monday.
Her 48-year-old father is expected to be extradited to NSW on Wednesday to be charged.
The girl's 23-year-old mother has been released after questioning.