A father who stabbed his four-year-old son to death has been found not guilty, due to his mental incompetence.

David Janzow killed his son Luca in July last year.  Luca died in hospital after David alerted a police in the Adelaide foothills that he had injured his son, who was found in his ute.

After a series of psychiatric reports were submitted, Justice John Sulan found David not guilty by reason of mental incompetence, but found that David was indeed the sole perpetrator of the crime.

David will now be subjected to a lifetime supervision order within a secure psychiatric facility.

A victim impact statement from Luca’s mother, Julia Trinne was read out to the court.  “I will grieve for Luca until my last breath,” she said in the statement.  “At the young age of four Luca had inner wisdom of someone far beyond his years.”

Describing how Luca’s death had affected her emotionally, Julia explained in the statement that she felt, “Shattered, utterly and incomprehensible broken.”

“I wanted to get out of this world, I wanted to find Luca. It’s a sadness I did not know was possible. I felt broken and I was broken. I wish Dave had taken me instead.”

“Every part of the life I knew and lived no longer existed. The man who Luca and I loved so dearly was the man who took my son’s life.  I have lost my beautiful son Luca and I have lost my husband.”

“The loss of Luca and the grief itself is devastating beyond comprehension, I felt at times I could’ve stopped breathing and sometimes I wish I could.  I know deep inside I will never be the same.”

The case is set to return to court in February, where the terms of David’s mental health licence will be ordered.

Main image courtesy of Facebook. 



  • Dealing with the pain of the death of a child especially in such tragic circumstances is unimaginable. Sending prayers to the family and friends of little Luca and praying his mum can survive through her grief


  • Due the fact that technically this case is still before the courts we have to be careful what is said or written.


  • My goodness what a horrible thing for all involved, I pray they all find peace to get though this


  • Oh what an absolute horrible story. I do hope some peace can be found.


  • I can’t imagine how devastated she would be. Her precious child taken from her way too soon.


  • What a tragic story – my heart breaks for you.

    Do hope you will be able to find peace somehow


  • I don’t even know what to say. My heart breaks for you Julia. No mother should EVER have to endure something so terrible. RIP Luca xx


  • Absolutely sad for everyone. I can’t imagine how you’d cope.


  • What an absolute tragedy. To go from a loving family to having lost both David and Luca. My thoughts go out to Julia at this absolutely tough time.


  • This saddens me completely. Thinking of and sending love and prayers to dearest Julia.


  • How heartbreaking to loose both your son and husband in this way, what pain this must be !! Praying for and thinking about mum Julia, may God draw near to her and comfort and heal her broken heart.


  • Dearest Julia,
    I read your heartbreaking story about your sweet young son Luca. What a horrible incident to happen to your dear boy. Please accept my deepest sympathy. You said you wished that your husband Dave had taken you instead. If that happened then where would Luca have been? A parent should never have to bury any of their children. My heart is hurting for you. Luca is safe now, but your heart needs healing. I pray healing virtue to flow and peace be yours in your loss through the LORD, for He is with you and understands your loss and sadness. As a mother it hurts deeply, because you carried Luca and birthed him. I am so sad with you. God bless you dear lady. Sending love, care and prayer your way.


  • Like jf


  • I just cannot imagine and never want to imagine or know what she is going through. It is just the most unthinkable thing that could happen to a child. And so hard for a mother left behind. I hope that she can somehow move forward (eventually).


  • How harrowing for all involved. Cannot begin to imagine how hard it must be living without normal freedoms and not fully understanding why. So tragic for immediate and extended families.


Post a comment
Like Facebook page

LIKE MoM on Facebook

Please enter your comment below
Would you like to include a photo?
No picture uploaded yet.
Please wait to see your image preview here before hitting the submit button.
Your MoM account

Lost your password?

Enter your email and a password below to post your comment and join MoM:

You May Like


Looks like this may be blocked by you browser or content filtering.

↥ Back to top

Thanks For Your Star Rating!

Would you like to add a written rating or just a star rating?

Write A Rating Just A Star Rating