Two men stole a pair of rings from a Romford jewellers, after distracting the sales assistant.
The thieves may have been involved in similar crimes, police say, following the incident at HS Samuels on February 18.
Police now want to identify two people to help with their enquiries.
If you know the men, or have any further information relating to this incident, please call PC Holly Goddard at Romford Police station on 101 or Crimestoppers on 0800 555111.
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