"Haryana Chief Minister Mr Khattar is fully responsible for the violence and must step down," BJD spokesman P K Deb said.
"The chief minister of Haryana should take moral responsibility and step down in view of the killing of 30 people in the violence," said Deb, also an MP.
State General Secretary of BJP Prithviraj Harichandan, however, said, "The Dera violence should not be politicised."
"Pained by loss of lives in violence in #Haryana. I condemn the unlawful acts in strongest possible terms and appeal for restoration of peace," Patnaik tweeted.