In a bid to check unauthorised constructions in the Chennai metropolitan area, Chennai Metropolitan Development Authority (CMDA) on Thursday locked and sealed two buildings in Pursaiwakkam and Perumbakkam, respectively, for violating the Town and Country Planning Act, 1971.

A CMDA spokesman told Express that officials have sealed a five-storey residential building in Pursaiwakkam as the owner has deviated from the original plan. The lock and seal notice to the building was issued on February 8. A commercial building in Perumbakkam village was sealed after a notice of lock and seal, and demolition notice was issued on February 6, 2013.