Lucknow, May 25 - UPA's outside supporter Samajwadi Party today gave a call for a state-wide bandh in Uttar Pradesh on May 31 to press for roll back of petrol price hike.

"The party's state executive meeting chaired by SP supremo Mulayam Singh Yadav decided to hold state-wide bandh on May 31 to protest hike in petrol prices. We will demand from the Centre to check inflation and roll back petrol price hike," SP spokesman Rajendra Chowdury said.

Two key UPA allies - Trinamool Congress and DMK - have already stepped up pressure on the Centre to roll back the steepest-ever petrol price hike of Rs 7.54 per litre.

West Bengal Chief Minister Mamata Banerjee will take out a protest march in Kolkata tomorrow while DMK has given a call for an agitation in Tamil Nadu on May 30.

The protests by the Trinamool Congress supremo and the DMK are expected to lend weight to a united opposition onslaught against the hike with the BJP-led NDA and the Left already announcing an all-India bandh on May 31.

While the Trinamool Congress has already held a round of protest in Kolkata yesterday, DMK chief M Karunanidhi has said his party MPs will take up the matter with the government.

At the meeting, Yadav also directed the party leaders to hear grievances of the people and act on them accordingly to gain their confidence.

The SP supremo met ministers at the party office and told them to visit wheat purchase centres to check anomalies, if any, to facilitate farmers sell their produce.

"You all should ensure that farmers do not get harassed at wheat purchase centres. It's your duty to see that farmers do not face any problems," he said.

During his meeting with party workers, Yadav was requested by those from Kannauj to field Chief Minister Akhilesh Yadav's wife Dimple Yadav from the seat in the upcoming bye-election.

"All workers and common man from Kannauj want Dimple to contest from Kannauj. As the seat has been vacated by (Chief Minister) Akhilesh Yadav we want his wife to be our representative in Parliament and raise voice for development of the constituency," a party worker said. PTI