It is two weeks since the last known sighting of Christchurch woman Tisha Lowry, but police and her family have not given up hope.

“We’re working away pretty hard and we’ve covered a lot of things again,” inquiry head Detective Senior Sergeant Virginia Le Bas said.

“We’ve had a search of the Avondale golf course today, but we didn’t find anything there.

“Every day there is something that we’re following up.”

The inquiry team remains at about 35 officers with specialist groups brought in when needed.

“We’ve had some sightings, but we’ve been able to verify who those people are and none of them were sightings of Tisha,” Le Bas said.

“Really it remains an absolute mystery, but we’re still very positive of getting through the work and hopefully we’ll locate her.”

Le Bas said members of the inquiry team were at the Bower Tavern today speaking to people who may have been at the hotel two weeks ago when Tisha was there with her grandfather.

Lowry, 28, disappeared without trace on the morning of September 25, after leaving the tavern in suburban Aranui to walk to her grandfather’s home nearby.

She was reported missing by her family on Sunday, September 28.

Initial reports said she had been seen walking along Wainoni Rd in the company of a man, however, Le Bas said police now believed the person who reported the sighting had been a bit confused and Lowry had probably not been with anyone.

“We’ve now gone through that and think that that’s probably not correct.”

Police found a knife during a search yesterday, but Le Bas said it had not been linked to anything yet.

“Everyone working on the investigation is very motivated to find her. There is a lot of work to still be done.”

Lowry and her 48-year-old boyfriend moved to Christchurch a year ago from Porirua and had been living together in the Aranui and Kaiapoi areas.

Recently Lowry had been living with her grandfather “to be in a different location and to have a little bit of space”.

Lowry’s personal belongings were found at home, including her cellphone and handbag.