article_snippet: I will say that they are known to police,' Detective Inspector David Isherwood said. '
article_snippet: The three aged 52, 27 and 7 respectively, were all known to each other,' Queensland Police said.
article_snippet: Detective Inspector David Isherwood speaks to media across from the scene of a triple murder at Biddeston .
article_snippet: The discovery was made by the man's daughter about 7.20pm on Monday at Biddeston .
highlights_snippet: The woman's father Derek was also discovered at the house in Biddeston - west of Brisbane - on Monday .
  