The realtor was shot dead in his office by unknown assailants on November 9, they said.
According to SP city Akash Tomar, following a tip off a checking drive was initiated in the Shalimar Garden area near ESI hospital by barricading the road.
SHO Rakesh Kumar Singh, who was leading the police team, signalled a white colour car to stop.
"Instead of halting the car the driver sped away after which the police team chased them. The vehicle rammed into a wall near a school and two occupants jumped down and tried to flee. The driver, meanwhile, opened fire on the police party. Three police personnel had a narrow escape. In retaliation, the police team also fired and a bullet hit the accused in his leg," Tomar said.
Police officials claimed that the realtor S P Singh was killed over a land dispute.
They also claimed to have recovered a pistol of .32 bore and 3 live and three used cartridges. A swift desire VDI car without registration number plate has also been seized, they said.
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