A Brixton shopkeeper was threatened by gun and knife-wielding robbers who raided his store.
Four men with their faces covered entered Premier Food and Wine convenience store in Brixton Hill at around 2am on May 5.
After threatening the shopkeeper, they stole money, vodka and cigarettes worth £500.
Four men were seen running away towards the Blenheim Gardens estate.
Police have released CCTV footage and images from the robbery.
Anyone with information should call police on 020 8345 4226 or Crimestoppers anonymously on 0800 555 111 or via crimestoppers-uk.org.
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