A Brooklyn man was arrested for allegedly murdering his 77-year-old mother, police said Tuesday.

The victim, Marie Louis, was found unconscious and unresponsive with severe head trauma inside her East Seventh Street home in Kensington just after 10 p.m. Monday, cops said.

She was pronounced dead at the scene and her 36-year-old son, Arnel Henry, was arrested and charged with murder, cops said.