Coolum's fatal stabbings grew from mental health problem
ANTHONY William Young was experiencing a major mental health problem when he stabbed his brother and his brother's partner to death in Coolum in 2013.
Queensland Coroner Terry Ryan on Monday outlined how Young murdered the people he shared a home with.
Young was shot to death shortly after he murdered David Young and Louise Dekens.
Mr Ryan said the 42-year-old stabbed his brother multiple times in the head, chest and back in the kitchen of their home on August 21.
Ms Dekens tried to escape but Young caught her, stabbing her twice in the chest.
He then stabbed Ms Dekens twice in the chest before confronting police with a machete.
"His (Young's) mental state played a role in the deaths," Mr Ryan said.
"Young … experienced a marked deterioration in his mental health prior to the deaths.
"David Young died of multiple stab wounds inflicted on his chest, back and head by his brother.
"Ms Dekens died from two stab wounds to the chest - one penetrating through the front and one through the back."
*If you need help for mental health problems please phone Lifeline on 13 11 14. If you are experiencing domestic violence please phone DVConnect on 1800 811 811 or 1800 600 636 or 1800RESPECT (1800 737 732).