An autopsy has confirmed that the death of Vancouver Island teenager Tyeshia Jones is a homicide.

The body of an 18-year-old woman believed to be Jones was discovered Friday near a First Nations cemetery in Duncan, B.C., not far from where she was last seen.

Police have not said how she died, but confirm Jones was murdered and they have no suspects in the case.

"This is without a doubt a homicide investigation. We are confident Tyeshia died at the hands of another person, or persons," Cpl. Darren Lagan said.

Jones was last seen on Jan. 22 at her best friend's house on the Cowichan reserve. She left to meet a friend at a local grocery store at 3 a.m. but never arrived. Her cell phone was found at an adult learning centre the next day.

Police say they assigned more than 50 officers to work on the case.

Cpl. Lagan said police have had hundreds of people contact them to share information they think might help the case.

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