While working outside the store on Queens Street on Saturday, February 24 a person placed a suitcase down at around 3.30pm where it was stolen from.
The suitcase contained cash, headphones and a coat.
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Thames Valley Police released a CCTV image on Monday, March 11 of a woman officers they wanted to speak to following the incident believing she had “vital information” about the theft.
A police spokesperson has since confirmed they have identified the woman and the investigation is ongoing.
If you have any information on this incident contact police online or by calling 101, quoting reference number 43240087880.
Alternatively, for 100 per cent anonymity, you can also call the independent charity Crimestoppers on 0800 555 111.