But Police Scotland have now revealed they made a visit to the same bridge around 2.50pm on Monday, January 6.
CCTV shows Eliza and Henrietta spent five minutes at the footpath and the Victoria Bridge but didn’t engage with anyone else in the area.
They were then seen making their way through the city centre via the Union Square shopping centre and back to their flat in the Charlotte Street area of the city.
Police don’t believe either of them left their flat again until they were last seen at the River Dee in the early hours of the following morning.
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It has also emerged that a text was sent from Henrietta’s mobile phone to their landlady at the time they went missing from the area of Victoria Bridge, telling her they would not be returning from the flat.
The phone was then disconnected and hasn’t been active since with the landlady reporting her concerns to the police the next day when personal belongings were found inside the flat.
When spotted on CCTV on Monday, both were wearing rucksacks and police are now asking anyone who might have seen them at that time to contact them, but repeated their belief there is no criminality involved.
Superintendent David Howieson said: “We have carried out a significant trawl of public and private CCTV footage as we try to establish the sisters’ movements.
“Several hours of footage are being examined by a dedicated team of officers and we have so far established that Eliza and Henrietta were at the footpath next to the River Dee at 2.50pm on Monday, 6 January, 2025.
“Although the sisters didn’t engage with anyone else at this time, the area would have been busy and we are keen to speak to anyone who may have seen them.
“Please think back, did you notice anyone matching their description?
“After returning home, there is nothing to indicate that Eliza or Henrietta left their flat again until shortly before they were last seen at the River Dee.
“Extensive enquiries are ongoing and I would again stress there is nothing to suggest any suspicious circumstances or criminality.”
(Image: Police SCotland) Searches for the twins have focused on the River Dee with no indication they left the immediate area.
More specialist units will help with the search in the coming days, including at the harbour area.
Superintendent Howieson added: “We have had a positive response from the public to our appeals and I would like to thank everyone who has already come forward.
“I would again urge anyone with any information which could help find Eliza and Henrietta to get in touch.
“We remain in regular contact with Eliza and Henrietta’s family in Hungary and we will continue to provide them with support at this very difficult time.
“Searches will continue in the coming days and our officers will continue to do everything they can to find Eliza and Henrietta.”
Anyone with information is asked to contact Police Scotland on 101, quoting incident number 0735 of Tuesday, 7 January, 2025.