Stop-work notices have been issued to 859 construction sites in Mumbai in the last two months and a fine of Rs 2 lakh each has been imposed on two construction firms for violating norms aimed at curbing air pollution, the Brihanmumbai Municipal Corporation (BMC) said on Friday, reported news agency PTI.

Show-cause notices were served to 603 construction sites and notices were issued to a total of 2,955 constructions for not following the guidelines during this period, it said in a release, reported PTI.