A woman has been arrested for the alleged murder of an eight-year-old boy, who was found unresponsive in his Rockhampton home early this morning.
Officers discovered the child when they went to the home in Frenchville for a welfare check about 2:20am.
Police said the "sudden death" was suspicious and a 36-year-old woman has been arrested.
Capricornia Police District Detective Acting Inspector Luke Peachey said the child and woman were known to each other, but would not detail if they were related.
"The charging will be imminent," he said.
"There's a lot to be done still.
"Obviously, it is a very tragic day for those family members of that little boy and also, obviously, the police who attended.
"Whenever we attend a scene where anyone's deceased, it's never great but, obviously, it hits a little bit harder when it's an eight-year-old boy."
Forensic officers were at the scene on Saturday and Inspector Peachey hoped they would have a clear idea in the coming days of what happened.
He would not detail what, if any, injuries the boy had or who was home at the time.
The property was part of a complex.
"We're speaking to a number of witnesses," he said.
"Today will be about mapping out how this tragic event has occurred.
"We are still contacting some family members to make sure they know, so I won't be releasing any more [details]."