The Federal Board of Revenue (FBR) has put on notice non-filers and asset-concealing filers.
A total of 200,000 people of the Punjab capital are asked to reply and the board claimed the notice served after gathering information from the third party.
The board took the action after gathering information from the departments concerned like LDA, excise etc.
Govt employees are also among the person who did the crime, the FBR said, adding that non-filers will be fined up to 40,000.