Amamuddin Sadar was attacked along with two others in Merrylands in a random stabbing spree about 10am on Tuesday.
The 38-year-old attempted to shelter in a stairwell but died from his injuries.
“We are in shock, we are (going through) a deep pain,” his sister Meena told 9News.
“We cannot explain our pain.”
Masoud and Meena Sadar described their brother as hardworking, saying he would take care of his friends, family and community.
His siblings told 9News their parents are still in Afghanistan and have been hospitalised since hearing the news.
He has since been charged with one count of murder and two counts of causing wounding or grievous bodily harm with intent to murder over the alleged attack.
The second patient, Luke Francis, allegedly absconded from the same facility within days of Leaaetoa’s escape.
He allegedly attacked a nurse before escaping Cumberland Hospital.
The Nurses Union has revealed that despite Cumberland Hospital being set to become one of the largest mental health facilities in the country, it only has three security guards on staff at any time to manage the entire facility.
If you or someone you know is in need of support contact Lifeline on 13 11 14 or Beyond Blue. In the event of an emergency dial Triple Zero (000).
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