Two parents and their teenage children have been found dead in the affluent Perth suburb of Mosman Park in a suspected murder-suicide, Western Australian police say. “Although this investigation is in its infancy, police are investigating this matter as a murder-suicide,” homicide detective Jessica Securo said. View image in fullscreen Police forensic crews at the scene in Mosman Park. View image in fullscreen The Mott Close home is in Mosman Park, one of Perth’s most affluent suburbs. Kate Chaney, the federal MP for Curtin, which includes Mosman Park, said in a statement that the suspected murder-suicide was “shocking and devastating for our community”.