A heavily pregnant woman killed along with her seven-year-old son had been living with and caring for her 52-year-old father when all three were shot dead. Kris-Deann Sharpley was on maternity leave and excitedly awaiting the birth of her little girl who she’d chosen to name Amber Elizabeth Rose after her late mother when she was slain, her sister-in-law Sara Turnball told the Courier Mail. Kris-Deann’s body was found in a bathroom in her father Derek John Sharpley’s home while the body of her son Jackson was discovered tucked up in bed. Mr Sharpley’s body was found in the same bedroom and police believe he shot himself after killing his daughter and grandson. The horrific double-murder suicide has rocked the small town of Biddeston, west of Brisbane in Queensland where it took place. Kris-Deann Sharpley (left) was found dead in the bathroom while he son Jackson (right) was found in his bed . Jackson was discovered murdered while still tucked up in bed but police are not certain of how he died yet . All three bodies were found by Kris-Deann’s sister Tara on Monday evening when she came to the house to pick up some belongings and to see their pet dogs. Tara, who is also pregnant, was accompanied by her boyfriend Allan Brown and had to climb through a window to gain access to the house. Derek Jackson's body was found in the bedroom with a gunshot wound . Mr Brown told the Courier Mail that Tara screamed out: ‘They’ve been murdered, they’ve been murdered.’ The scene at Toowoomba-Cecil Plains Road home was so grisly it distressed first-response police officers, according to Detective Inspector David Isherwood. 'Two of the victims, both the adult male and female, had very serious wounds to their bodies,' he said. 'Both appear to have been shot in the head.' A high-calibre weapon was found lying on a bed but police have not established how Jackson, discovered in a bedroom with Derek, died. Police have said Mr Sharpley's death is not considered suspicious but DI Isherwood stopped short of confirming the tragedy was a double murder-suicide. 'I will say that they are known to police,' he said. 'At this point in time there's nothing to suggest there was any incident that occurred in terms of a disturbance.' DI Isherwood earlier said that investigations indicate that there is no further threat to public safety. 'I must stress that we are in the early stages of our investigation however it would appear that two of the deaths are suspicious and the death of the man is non suspicious,' he said. 'Two people that live in the town heard three distinct gunshots,' DI Isherwood said. The gunshots were heard on Sunday night but locals presumed it was someone shotting an animal. A dog barks behind a gate at a house in which the bodies of a man, a woman and a young boy were found in Biddeston, west of Toowoomba, Queensland . Police guard a house where the bodies of the relatives were found on Monday night . A police officer looks at a dog barking behind a gate at the house in which the bodies were discovered . Kris-Deann Sharpley was on maternity leave and excitedly awaiting the birth of her little girl . Kris-Deann shared this photo of her son Jackson and a scan of her unborn child Amber on Facebook before she was killed . 'There is no evidence that the house has been broken into when the police arrived they had to force entry into the premises. It would appear that the house was secure. The first person who attended the residence had to climb in to gain entry.' 'Police attended a Biddeston Southbrook Road address around 6.50pm after the bodies of a man, woman and boy were located. The three aged 52, 27 and 7 respectively, were all known to each other,' Queensland Police said. The shooting happened on the corner of Toowoomba-Cecil Plains Road and Biddeston-Southbrook Road at Biddeston - more than 150 kilometres west of Brisbane. 'There are no concerns for public safety,' a police spokesman said. 'Detectives are on scene and a crime scene has been established.' A neighbour told AAP the red brick bungalow belongs to a single-parent family with several children . Police have described it as 'a terrible situation that has claimed the lives of a woman and her son' Local businessman Paul Farmer described the home owner as 'a quiet, friendly guy'. 'He would often come into the [my] shop and book things up like milk and bread and tobacco... but he would always pay,' he said. Neighbours say police visited the house on a number of occasions but the family were 'well-liked'. Readers seeking support and information about suicide prevention can contact Lifeline on 13 11 14. Detective Inspector David Isherwood speaks to media across from the scene of a triple murder at Biddeston . Local shop-keeper Paul Farmer looks on across from the scene of a triple murder at Biddeston . Forensic officers took photographs after arriving at the scene on Monday night . Forensic officers are seen outside the house where the bodies of a man, a woman and a young boy were found . Local businessman Paul Farmer described the home owner as 'a quiet, friendly guy' Neighbours say police visited the house on a number of occasions . The discovery was made by the man's daughter about 7.20pm on Monday at Biddeston . The victims also included the man's teenage daughter and a young boy inside the brick home on the corner of Toowoomba-Cecil Plains Road and Biddeston-Southbrook Road . Biddeston is a rural town  in the Toowoomba Region, Queensland, and is home to less than 400 people .
Kris-Deann Sharpley, who was heavily pregnant, and her seven year old son were found dead on Monday . The woman's father Derek was also discovered at the house in Biddeston - west of Brisbane - on Monday . Police say the deaths of the boy and mother are suspicious but the death of the man is not suspicious .