After the Central Bureau of Investigation arrested a senior official of the Delhi Pollution Control Committee on corruption charges, BJP MP from Northeast Delhi Manoj Tiwari told NDTV, "This is a very serious issue. Delhi is one of the most polluted cities in the world. I congratulate the CBI for arresting such an official who is responsible for controlling pollution in the city but is taking bribes. A detailed investigation should be done and such people should be dealt with strictly."