Singapore, June 17 (ANI): The authorities on Sunday announced that the beaches on three Singapore islands will be shut until further notice after an oil spill on Friday spread to several coastlines, Channel News Asia (CNA) reported. The beaches at St John’s, Lazarus and Kusu islands will be closed after oil slicks were seen at the first two islands. Staff from NParks, together with volunteers from Friends of Marine Park, visited St John’s and Lazarus islands on Sunday to observe and document the effect of the oil spill in these areas. The closure of the beaches at the islands is in addition to…