The action against the policemen came a day after Governor Ram Naik took up the matter with Chief Minister Akhilesh Yadav after a massive outcry against the incident in which a minister Ram Murti Singh Verma allegedly conspired.
"SP Shahjahanpur has suspended five policemen, including Station House Officer Shri Prakash Rai, with immediate effect," IG (Law and Order) A Satish Ganesh told reporters here.
The other four included Sub-Inspector Krantiveer Singh, Head Constable Subhash Chandra Yadav and constables Udayveer and Mansoor.
His family alleged that the police officials set him on fire. Singh succumbed to the injuries on June 8.
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An FIR was registered against minister for Backward Classes Welfare Ram Murti Verma, Inspector (Chowk) Sri Prakash Rai, Gufran, Akash Gupta, Amit Pratap Singh and Bhure for killing Jagendra.
The journalist invited Verma's ire by posting reports on Facebook about illegal mining activities and land grabbing against the minister.
The minister is reportedly absconding.
The FIR lodged against the minister by Singh's son alleged that the minister sent the team of policemen to his house who doused Singh with kerosene oil and set him on fire.
Meanwhile, the opposition parties termed the action taken by the state government as an "eyewash" and accused it of shielding the minister.
"First of all the action taken is too late. The government should have suspended the policemen immediately after the incident and arrested them," BJP spokesman Vijay Bahadur Pathak said.
He accused the government that instead of dismissing the minister, it was shielding it.
Even a ruling SP MLA from Lucknow, Ravidas Mehrotra has demanded sacking of the minister.