Sydney man allegedly planned stabbing attack on family 'for some time'

About 5.40pm yesterday, emergency services responded to reports of a stabbing in a home on Sydenham Road, Marrickville.

NSW Ambulance paramedics treated a man, aged 25, for stab wounds to his face, neck, head and hand.

He was taken to Royal Prince Alfred Hospital in a critical condition, where he remains now in a serious but stable condition.

A woman, aged 55, was also treated for a stab wound to the throat, before being taken to Royal Prince Alfred Hospital in a stable condition.

She is expected to be discharged shortly, police said later this morning.

A 22-year-old man was arrested at the scene and charged with two counts of causing wounding/grievous bodily harm to a person with intent to murder.

Detective Inspector Ben Kennis told media this morning the 22-year-old was the brother of the 25-year-old and the son of the 55-year-old.

“We will allege (the accused) had been planning this for some time,” Kennis said.

The 22-year-old’s father was also in the house at the time, but not in the room when the alleged attack took place, and he managed to run out the front door and warn somebody who contacted emergency services.

However, Kennis said, it was believed at this stage the father was also intended as a potential victim.

He said it was believed nothing had happened yesterday evening to set off the alleged attack, and that it took place “without warning or provocation”.

He said the family was not “known adversely” to police.

The investigation is ongoing and anybody with information is urged to contact Crime Stoppers on 1800 333 000.

National Domestic Violence Service: 1800 RESPECT (1800 737 732). If you are in immediate danger call triple zero (000).