Suffolk police have given a detailed update of their investigation into the unsolved murder of a teenage girl from Trimley St Mary as the 21st anniversary of her disappearance approaches this weekend.

Victoria Hall, aged 17, was last seen alive in the early hours of Sunday 19 September 1999, in High Road, Trimley St Mary.

In September last year, Suffolk Police revealed that the case – known as Operation Avon - was now a live inquiry again and being fully reinvestigated by a new team of detectives, after fresh information had been received that was not previously known.

Victoria left home on the evening of Saturday 18 September 1999 to go for a night out with a friend at the Bandbox nightclub in Bent Hill, Felixstowe, where they remained until around 1am on the morning of Sunday 19 September.

They then went to get some food at the Bodrum Grill in Undercliff Road West, before beginning the walk back to Trimley St Mary. They parted at around 2.20am near to the junction of High Road and Faulkeners Way. Victoria was just yards away from her home.

When Victoria's parents woke-up that morning and discovered that she had not returned home, the police were called and a missing person inquiry commenced.

Five days later, on Friday 24 September, Victoria's naked body was found in a ditch beside a field by a dog walker in Creeting Lane, Creeting St Peter, approximately 25 miles away from where she was last seen. None of her clothes or possessions have ever been found.

Since the investigation became live again last year, the inquiry team have made significant progress and undertaken a huge amount of work.

90 calls or messages have been received from members of the public following the renewed appeal and many of these have helped piece together information and create new lines of enquiry.

All forensic opportunities are being exhausted, following a thorough review of the 3,000 exhibits that exist within the investigation. Detectives from the Major Investigation Team have worked closely with experts from the National Crime Agency, who are providing support to the investigation.

The movements of over 70 individuals on the night in question have already been assessed in great detail, by reviewing a total of over 9,000 statements, documents, messages and reports from the original investigation.

Officers are also continuing to work through over 1,200 links to people and vehicles and are making a specific appeal to hear from anybody who was either walking or driving in Trimley St Mary, between 2am and 4am on Sunday 19 September 1999, to make contact and provide their details, as this information will help to fill any gaps and greatly assist the inquiry.

Detective Chief Superintendent Eamonn Bridger, Head of Crime, said: "Despite the passage of 21 years since Victoria was so cruelly torn away from her family, we remain positive and determined to find a breakthrough in this case and to deliver justice for them.

"When the reinvestigation into the abduction and murder of Victoria was launched last year, a dedicated Operation Avon team was set-up to pursue new lines of enquiry and to identify fresh opportunities from the original investigation.

"The work undertaken so far has been vast and the team – with the assistance of numerous other colleagues - have made significant inroads. There is still much to do and we remain fully committed to completing this.

"Officers have remained in contact with Victoria's family throughout this process, providing them with continued support and keeping them updated as to the progress of the investigation.

"Everyone was encouraged by the support we received from members of the public last year and we are grateful to all the people who contacted us with information.

"We still believe there are people out there who will know something very significant about this case, but have still as yet not told us. It is never too late to come forward and we are ready to take their call.

"We know allegiances can change over the years and someone who may have been compelled to keep a secret to protect another person may no longer feel the same obligation.

"Any information we are given will be treated with the utmost confidence. Please help us to solve this shocking crime and provide Victoria's family the answers they deserve."

Victoria's clothing and personal belongings that she had about her person the last time she was seen alive have never been found.

Images of the dress, jacket, shoes and a wooden hair slider that Victoria was wearing the last time she was seen, are again being issued and can be viewed in the gallery below.

For the first time last year, details about some of Victoria's personal belongings were disclosed as follows:

- a black oval shaped New Look purse with a zip fastener, containing a house key on a distinctive fob with 'Vicky' across the top and 'Victoria' down the sides

- a Rimmel lipstick in a black plastic case, the colour of which is believed to have been 'Zorro'

- the inner soles of one or both of Victoria's shoes had been fixed with Sellotape.

Also as part of last year's appeal, CCTV footage was released of individuals at the field in Creeting St Peter where Victoria's body was found, which was captured during the month following her death.

A number of the calls received into the inquiry team related to this footage and the information provided has been taken into consideration as part of the ongoing investigation.

Anyone with information should contact the Major Investigation Team, either via the online portal here: https://mipp.police.uk/operation/3637020112A02-PO1 or by calling 101 and quoting Operation Avon.

Alternatively, contact the charity Crimestoppers 100% anonymously on 0800 555 111, or via their online form: www.crimestoppers-uk.org