SHOCKING: Police guard the scene at Allan Ave, Glasshouse Mountains where a couple was found dead in a bedroom.

SHOCKING: Police guard the scene at Allan Ave, Glasshouse Mountains where a couple was found dead in a bedroom. Megan Mackander

A LITTLE girl has been orphaned after both her parents were found dead inside the family home at Glasshouse Mountains.

Within the leafy suburban area, where Mt Ngungun and Mt Tibrogargan tower as bookends to the Glasshouse Parklands estate, police entered the Allan Ave home about lunchtime on Saturday to find a man and a woman dead in a bedroom.

Police were confronted with a gruesome scene.

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While officers said the pair died from serious trauma, detectives did not elaborate how the couple in their 30s were killed or if any weapons had been used.

But late on Sunday, police released a statement saying they would prepare a report for the Coroner.

"The death of the 34-year-old woman is being treated as suspicious and the death of the 42-year-old man as non suspicious,'' police said, confirming earlier speculation that it appeared to be a murder-suicide.

STUNNED BY DEATHS: Police chat to a neighbour at Allan Ave yesterday after discovering the dead couple.

ACTING Detective Inspector Daren Edwards said the grandparents had raised the alarm and contacted Beerwah Police when efforts to reach the couple failed yesterday morning and they became concerned for their loved ones' welfare.

The little girl, whose age was not revealed, was picked up from school on Friday and spent the night at a sleepover at her grandparents' house.

By 12.30pm on Saturday, both her parents were dead.

The officers gained entry into the house where they were confronted with the unthinkable.

"The investigation is that deceased persons have obvious injuries to them," Acting Det Insp Edwards said.

"There is no other person at this time that we need to speak to.

"So we are just trying to piece together what has taken place yesterday through to this discovery this morning and what may have transpired at that residence.

"It was quite disturbing to find them the way they have been found."

Acting Detective Inspector Daren Edwards holds a press conference on the deaths of a Glasshouse Mountains couple. Megan Mackander

Police spent Saturday and most of last night at the home, taking evidence and interviewing neighbours to piece together how the two were killed.

The lower end of Allan Ave was closed to traffic yesterday afternoon as police set up a crime scene.

Many neighbours stayed inside as the hordes of police and media arrived.

Those who came to check out the commotion said the incident was "shocking" and out of the ordinary.

Some said the couple and their daughter kept to themselves.

"This is a residential area, quite a nice area, where middle-aged people with children is the normal make-up," Acting Det Insp Edwards said.

"Police and neighbours are very surprised and a lot of neighbours aren't aware of what has transpired in that residence.

"It is a nice neighbourhood and certainly something out of the ordinary for the area."

Anyone needing support or information about suicide prevention should contact Lifeline on 13 11 14 and for those affected by suicide, please contact StandBy Response Service on 0407 766 961.