Connecticut Man Allegedly Murders Mother, Sports Scratched Face in Mug Shot

A man in Connecticut has been arrested after allegedly killing his mom in a town many celebrities have called home ... and, his mug shot's quite startling.

Sebastian Van Stockum -- a 20-year-old man -- was arrested Friday after officers were called to a home in New Canaan, CT by someone who allegedly told them he'd killed his mom.

Emergency crews tried to perform life-saving measures on the victim -- who the police aren't publicly identifying yet ... but the person was ultimately pronounced dead at the scene. Stockum has been charged with murder, and he's being held on $2 million bond.

Stockum's mug shot shows numerous cuts and abrasions on his face ... with his eyes downcast away from the camera as he poses.

New Canaan is a small, wealthy town about an hour outside of New York City, several celebrities -- like Harry Connick Jr. and Paul Simon -- have called it home. Actors Katherine Heigl and Christopher Lloyd grew up in the town.

Despite the idyllic look of the place, this is the same town where Jennifer Dulos -- a 57-year-old mother -- went missing in 2019 after dropping her children off at school. She was pronounced legally dead in 2023.