Police in New Zealand are searching for a British backpacker who has been missing since December 1.
Detectives are investigating the disappearance of Grace Millane, who was last pictured at an entertainment complex on Saturday night.
She maintained regular contact with her family and friends, but vanished from a "party hostel" the day before her birthday.
She had been in nearly daily contact with her family through social media and WhatsApp messages.
"The police investigation today has concentrated on her movements and activities in Auckland since she's arrived in New Zealand", Beard said.
The witness said the young woman, who she believes to have been Millane, did not have her arm out with her thumb stuck up in the air like a hitchhiker. She was spotted on CCTV at 5.30pm arriving at the Base Backpacker hostel in Auckland.
"At the time of the last confirmed sighting, she was wearing a black dress with white Converse shoes".
Before coming to New Zealand she travelled as part of an organised group through South America for six weeks.
"The longer this goes on the more concerning it is", Beard said.
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"We've spoken to a number of people at the backpackers because she was in a room that at least four people were staying in".
Ms Millane's brother Michael said: "We are really, really anxious and concerned about Grace".
The radio silence was "unusual" for Grace, Declan Millane said.
She is about 5ft 6in tall with brown hair and brown eyes.
Her brother was not sure of her travel plans in New Zealand, but he knew she had a flexible itinerary booked to travel around most of the country.
Grace's father David Millane, 60, is flying out to New Zealand to help with the search.
Tony McLeod, British High Commission Wellington consular manager, said the commission was aware of the missing person report.
Members of Millane's family have shared appeals for information on Facebook, and Beard said more than 20 staff were working on the case.
The Foreign Office said it was providing support to Auckland police.