A 31-year-old woman was beaten and stabbed Thursday night in the Tenderloin neighborhood of San Francisco when she tried to stop of a group of young people from harassing a homeless person, police said.

The incident occurred just before 9 p.m. at the intersection of Eddy and Hyde streets when the victim spotted a group of five young people bothering a homeless person, police said.

When the victim attempted to intervene, the assailants turned on her and beat and stabbed her, police said. She was taken to a hospital, where she was treated for non-life-threatening injuries, police said.

The five attackers one believed to be 16 to 20 years old, were last seen running westbound on Eddy Street, officials said. Police did not release detailed descriptions of them.

No arrests were made.

Kiley Roache is a SFGate intern. Email: kroache@sfchronicle.com Twitter: @KileyRoache