RCMP on Vancouver Island say they have exhausted their search effort in the area where 18-year-old Tyeshia Jones was last seen.

Jones has been missing for six days after planning to meet a friend at a grocery store in Duncan late Friday night.

Her cell phone was found on the grounds of a nearby adult learning centre the next day.

Duncan Mounties say there are 40 officers assigned to the missing person's case and there is still no indication she was met with foul play.

Search and rescue crews, dog teams and a helicopter crew have spent the last few days scouring the area she was last seen.

The search was suspended briefly on Wednesday while forensic identification unit examined a ravine property on Miller Road, but investigators didn't find anything useful.

"As time goes on, pieces are coming together but there's not enough pieces that have fallen into place yet and we need that to happen soon," Cpl. Kevin Day said.

Police say they're still following up on leads they've found in their investigation, including leads from the public.