NSW man behind bars after brother stabbed

A Sydney man is behind bars accused of stabbing his older brother and attacking his brother's car.

The 43-year-old and his brother, 48, were allegedly in a physical altercation inside a Cambridge Park home on Friday evening, police said on Saturday.

After the older brother went outside to his car, the younger brother allegedly threw a glass bottle at the car and then stabbed the seated man through the open driver-side window.

He then stabbed the car multiple times, police allege.

The younger brother was arrested and refused police bail on charges of domestic-violence-related wounding with intent to cause grievous bodily harm and damaging property.

He is due to face Parramatta Bail Court on Saturday.

The older brother was treated for a shoulder wound and taken to Westmead Hospital.