Man allegedly woke to being stabbed during Melbourne home invasion

A man allegedly woke to being stabbed after three offenders stormed his home while his wife and four children were also home in Melbourne's north overnight.

Neighbours in Roxburgh Park's Maisie Court woke to the sound of the victim's screams after the 44-year-old father was attacked around 5am.

Police said a 16-year-old boy suffered an injury to his hand after he attempted to intervene in the assault.

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The three offenders fled the scene in a car after allegedly threatening the family with a firearm, firing a shot within the home.

The man, who was believed to be asleep at the time the assault began, was rushed to hospital in a critical condition, but is now stable.

Police said he suffered serious stab wounds to his head and upper body, including a wound to the neck.

A family member took the 16-year-old to hospital after the attack.

No arrests have been made.

Police have said the attack appeared to be targeted, but the motive was not clear.

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Anyone who witnessed the incident, or has dashcam or CCTV footage is urged to contact Crime Stoppers.