Shiv Sena (UBT) leader Aaditya Thackeray on Tuesday raised concerns blatant irregularities in road concretisation projects worth Rs 6,080 crore in Mumbai and accused the Brihanmumbai Municipal Corporation of going absolutely silent after he raised the issue.

Thackeray sent a two-page letter to BMC Commissioner Iqbal Singh Chahal, raising 10 questions, which he called crucial for Mumbaikars, regarding the concretisation of 400 km of roads in the metropolis and urged him to respond to them.