A $50,000 reward has been posted in an effort to solve the 1972 murder of 16-year-old Yvonne Leroux.

York Regional Police say the body of the Toronto youth was found on Nov 30, on 16 th Side Road between Jane Street and Keele Street in King Township. The investigation into her death revealed blunt force trauma to be the cause of death.

Leroux was last seen on the evening of Nov. 29, near the York Finch General Hospital – now known as the Humber River Hospital.

Investigators say Leroux’s family used to live in Windsor when she was younger. Even though her family moved to Toronto, Leroux visited the Windsor area frequently in the years leading to her murder.

She’s described as standing 5’ 3”, with a medium build and long brown wavy hair.  Leroux was last seen wearing a navy-blue wool coat, white shirt, blue jeans, a metal chain around her neck and tan boots with zippers.

Investigators are hopeful that despite the passage of time, that they will be able move the investigation forward.

Anyone with information is asked to call police or Crime Stoppers.