Queensland police launch homicide probe into 2019 death of 11-year-old Sophie Smith

Almost two years after the death of Sophie Smith, which was initially deemed 'non supicious', Queensland polcie have launched a murder investigation. Photo / News Corp Australia

Queensland police have launched a homicide investigation into the death of an 11-year-old girl almost two years after she was found by a neighbour.

Sophie Smith was found dead in her Mount Cotton home in August 2019, and her mother was found with "self inflicted injuries" nearby.

At the time, police determined the girl's death was "non-suspicious", but an autopsy was carried out.

Police are expected to front the media on Monday morning to reveal more information about the new homicide investigation.

Almost two years after the death of Sophie Smith, which was initially deemed 'non supicious', Queensland polcie have launched a murder investigation. Photo / News Corp Australia

At the time of the girl's death, family friends described the "inseparable bond" between the 11-year-old and her mother, Nicole.

"Her whole world was Sophie, her life is her daughter. She is a charitable, lovely lady," a friend said.

Sophie's father, a fly-in, fly-out worker raised the alarm with neighbours after he hadn't heard from the pair for days.

A neighbour found Sophie's body in her bed and Nicole lying injured nearby, after reportedly having spent days by her daughter's side.

Queensland Police will reveal more details about their homicide investigation on Monday morning. Photo / News Corp Australia