A WIFE watched helplessly as her husband was allegedly beheaded by their son in a domestic dispute in Bankstown that was so disturbing police officers on the scene had to be counselled.
Toufic Zahab, 69, died after he was attacked with a brick and several knives inside his home on Thursday morning.
His 42-year-old son, Khoder, was arrested at the duplex house just after 6am as shocked family members screamed and police tried to restrain him in the lounge room.
On Thursday evening, he was charged with murder, common assault and assaulting police.
A relative said Khoder, who lives in Villawood, had come for dinner with his parents and had stayed the night.
Fairfax Media understands Khoder has a history of mental health illness.
He had insisted on staying the night and his parents allowed him to out of generosity.
In the morning, a fight allegedly broke out and Toufic's wife, Malake, was injured. When Toufic stepped in, Khoder allegedly attacked him with a brick and several knives.
Officers arrived to find Toufic's decapitated body in the lounge room and several family members and children present.
''The scene is quite disturbing,'' Detective Chief Inspector Glen Fitzgerald said. ''It's been a difficult morning for both the family and police.''
He said police who attended were counselled and Malake was treated for minor injuries and shock.
Toufic, a retired carpenter, was described as a ''very good but tough'' man who had three sons and five daughters.
''He was a wonderful man, a beautiful man, well known in the community,'' his grandson Abdul said. ''This is the most unexpected thing that could occur.''
He said Khoder had a mental disorder that was occasionally ''triggered''. ''Something must have set it off,'' he said.
A close family friend said that her father would drink tea with Toufic every day and would remember him as a man with a strong, loud voice and a warm personality.
''He [would] eat with us, laugh with us and converse with us [on] just about anything and everything,'' she posted online.
''I don't know how my dad will spend his days now that ur gone but i can guarantee that u will always b in his thoughts as he sits alone now on the veranda where ur memories will stay forever.''