The Central Bureau of Investigation on Saturday carried out searches at 12 locations in Uttar Pradesh and Delhi in connection with illegal sand mining case. CBI sleuths also carried out search at IAS officer B Chandrakala flat in Lucknow Hussainganj area. Chandrakala has been in news in the past for her anti-corruption crusade. Videos of the woman IAS officer reprimanding erring civic official had gone viral on social media a few months ago. The searches were spread across multiple districts including Jalaun, Hamirpur, Lucknow and also in the national capital Delhi.