Minister for urban development and housing & urban poverty alleviation M Venkaiah Naidu on Friday announced a list of 30 cities selected under the Smart Cities Mission, which takes the total number of cities under the mission to 90. Naidu said these 30 cities proposed a total investment of Rs57,393 crore under respective smart city plans. This includes Rs46,879 crore for ensuring core infrastructure in the areas identified by citizens for area-based development and Rs10,514 crore for technology-based solutions for improving governance, service delivery and utilisation of infrastructure. With this, the total investment approved under the smart city plans of 90 cities has gone up to Rs1,91,155 crore.