"We cannot accept the petrol price hike. It is unjust and unilateral. It was done without our knowledge," West Bengal Chief Minister Mamata Banerjee said in Kolkata, soon after the hike of Rs 7.50 per litre was announced.
Banerjee also questioned the timing of the decision, asking "Parliament session ended only yesterday but why was it (price hike) announced today?"
Echoing similar views, DMK chief M Karunanidhi said in Chennai that the price hike should be immediately rolled back.
He said the DMK MPs will convey the party view to the government.
UPA's outside supporter Samajwadi Party, whose chief Mulayam Singh Yadav was the focus of Congress-led government's celebrations yesterday, also slammed the hike as a "gift" to the common man on completion of three years in power.
"We demand immediate rollback of petrol price hike. The decision is anti-people," SP spokesman Rajendra Chowdhury said.
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Terming the steep hike in petrol price as "unreasonable", BJP warned of a political agitation if it is not withdrawn.
"We condemn the petrol price hike and seek its rollback. We will not allow it to happen. A strong democratic agitation is on the cards," BJP's spokesperson Prakash Javadekar said. (MORE)