A Queensland family has revealed their heartbreak after a six-month-old baby was found dead in a car next to his dad.
Baby William's death is being investigated as part of a murder-suicide after his body was found inside a red Holden Commodore on Wednesday, 7News reports.
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The car was discovered on an isolated track in the Beerwah State Forest on the Sunshine Coast.
His mother's cousin hinted at William's parents' difficult relationship, as well as his mother's heartbreak, in the description of a GoFundMe page set up for the family.
"This mother needs all the help we can give her so she can grieve for the loss of her child," she wrote.
"The courts have let her down and not kept the baby's father away from her son!
"Now this beautiful and innocent baby boy has been taken from her by the man who did nothing but make her life hell."
William had been missing for two days before his body was discovered by local council workers.
"The father and child failed to turn up in relation to some custody arrangements and as a result of that the mother was concerned," Detective Inspector Dave Drinnen said.
"It's extremely distressing, a very tragic incident. The mother was distraught, as you can well imagine."
Where to find help and support:
Need to Talk? - Call or text 1737
Lifeline - 0800 543 354 or (09) 5222 999 within Auckland
Samaritans - 0800 726 666
Depression Helpline - 0800 111 757
Suicide Crisis Helpline - 0508 828 865 (0508 TAUTOKO)