Auckland Police have spoken to media about the search for missing British tourist Grace Millane.
Ms Millane, 22, has been missing since Saturday, and was last seen in Auckland Central.
It was her birthday on Sunday, and her parents reported her missing when she failed to contact them.
Detective Inspector Scott Beard told media on Thursday afternoon that over 20 personnel were on the case, and they were scouring central city CCTV footage.
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He said Grace was last seen wearing a black dress and white Converse-style shoes. He urged people to keep their eyes peeled for someone matching this description.
Police released an image from CCTV of Grace in her last-known location, at Sky City on Saturday at 7:15pm.
She had been staying at a backpackers in Auckland CBD, in a room with at least three other people, said Det Insp Beard.
He said some of her belongings were still at the hostel when she disappeared, and they were speaking with those she may have interacted with there.
Police would not comment on what possessions were still at the hostel.
Ms Millane had been in New Zealand for two weeks, and recently travelled around the Bay of Islands. She was due to leave the country in about two weeks.
Her father is due to land in the country on Friday, and Det Insp Beard said the family in England are "distraught".
He said the longer the search goes on, the more concerning it becomes.
"We're still hopeful that we'll find Grace - but the longer it goes on, the more worrying it is."