Unhappy with “lapse” in her security during her two-day visit to Chhattisgarh, Uttar Pradesh Chief Minister Mayawati has asked her state’s Director General of Police (DGP) to suspend policemen responsible for it, top officials said on Sunday.“Mayawati was very upset over the Samajwadi Party workers stopping her vehicle and showing her black flags on Friday when she was going from the Raipur airport to the city,” a top official said here.Terming it as a “security lapse”, enraged Mayawati summoned her state’s DGP Vikram Singh from Lucknow to Raipur and asked him to suspend the security staff attached to her, the sources said.After a preliminary probe on Saturday, when Singh gave a clean chit to the policemen, she said, “It was fine that the people had flags in their hand, but what would happen if they would have something else and why the UP security staff did not react properly.”After the incident, the DGP and other officials came from Uttar Pradesh and were with her during the rally and party meetings throughout Saturday, they said.When contacted, Chhattisgarh DGP Vishwa Ranjan said his Uttar Pradesh counterpart had called on him on Saturday and discussed about the incident, but he refused to divulge any details of the talk. Meanwhile, Raipur District Superintendent of Police (Urban) Lal Umed Singh said a case had been registered in connection with the incident of fire at the Samajwadi Party state president Balram Singh Yadav’s residence.“A case of arson and riot had been registered against some BSP workers and leaders for the Friday night incident at the residence of Yadav,” Singh said. However, police have not yet arrested anyone in that connection.While coming from the Raipur airport to the city, about three dozen SP workers, led by party’s state Youth Wing president Dinesh Patil, stopped the bullet proof car of Mayawati, waved black flags and raised slogans against her for assault on the brother of SP President Mulayam Singh Yadav in Lucknow.Within hours of that incident, some angry BSP workers allegedly set on fire the house of SP state president, in which one of his new cars and couple of other things were gutted, the sources said.