The former chief minister was stopped near an under-construction toll plaza in the Hasanganj police station area on the Lucknow-Agra expressway and taken to the agriculture research centre in Dhaurhara from where he was allowed to return to Lucknow, Circle Officer Dhirendra Kumar Singh said.
"I was going to Auriaya to meet my party workers who were subjected to barbaric police action. The state government wants to win the zila panchayat post by misusing official machinery. My workers did not do anything wrong in Auraiya," Mr Yadav said.
"This dictatorial attitude with the help of police will not be tolerated. The BJP is only doing politics over cow," he added.
On a question about the tragic death of several children in a state-run hospital in Gorakhpur, he said it was a result of the government's failure.
Yesterday, the police had detained some senior SP leaders after workers allegedly turned violent at not being allowed to accompany their candidate for the zila panchayat chairperson's post to the nomination room in the Auraiya collectorate.