A tip-off to police during national Missing Persons Week in Late July, has police searching a South Grafton property today.

It is part of an ongoing investigation into the disappearance of 24 year old Jasmine Morris four years ago.

Jasmine Morris was last seen outside the Bi-Lo supermarket in South Grafton at around 3:00 pm (ADST) on October the 6th 2009.

She was reported missing to police two weeks later and there were reports she was seen around the Grafton and South Grafton areas after her disappearance.

Coffs Clarence acting crime manager Inspector Peter O'Rielly said tip-off to police in July, during Missing Persons Week, has led police the South Grafton property.

"Miss Morris has been missing since 2009 and we received some information which is very encouraging, which led us to a property on the Pacific highway at South Grafton today," he said.

"The search is ongoing.

"We've got police from our Operational Support Group, the Police Rescue, Forensic Services and the Dog Unit that are out there searching and they will probably be searching again tomorrow."

Inspector O'Rielly said so far no trace has been found of Miss Morris but the search will continue .

"It's a small farm, we've got a farm house and then the farm itself," he said.

"It's quite undulating terrain but it's over about 14 hectares.

"There's a couple of little creeks but there's not major watercourse.

"We're just looking for any evidence that may assist us in locating Miss Morris.

"It's obviously concerning for Miss Morris's family that she hasn't been seen or heard from since October 2009."