The Supreme Court has summoned Delhi Chief Secretary Vijay Kumar Dev saying there cannot be a large-scale exodus due to severe pollution in the region. <br />''<br />''The apex court, which also summoned the Chief Secretaries of Punjab, Haryana and Uttar Pradesh tomorrow, said every year a piquant situation of severe pollution arises in the region for a substantial period and the Delhi Government, civic bodies and other State Governments concerned are not performing their duties as enjoined upon them. <br />''<br />''A bench comprising Justices Arun Mishra and Deepak Gupta said, this is blatant and a grave violation of the right to life of the sizeable population by all these actions and the scientific data which has been pointed out indicates that life span of the people is being reduced by this kind of pollution.<br />''<br />''Terming the situation as a shocking state of affairs, the bench said, there cannot be large scale exodus. People have to perform their duty in Delhi also and people cannot be evacuated from Delhi being a capital city. The bench expressed its anguish that authorities have violated with impunity the directions passed by the apex court as well the high courts in pollution matter. It directed the State Governments of Punjab, Haryana and Uttar Pradesh to halt stubble burning in their areas. <br />''<br />