BHUBANESWAR: Accusing Chief Minister Naveen Patnaik of violating model code of conduct to favour Korean steel major Posco for granting mining lease, the BJP on Monday petitioned the Election Commission demanding penal action against him. The BJP alleged that the Chief Minister cleared the Steel and Mines Department proposal for granting mining lease in an area of 25 sq km at Khandadhar in Sundargarh district on April 19 without obtaining the Election Commission