A goon was held after an exchange of fire at 7.30 pm on Monday evening, police here said.
Police said they had signalled two-bike borne men to stop for a checking near a railway crossing in the area when the person riding pillion fired at them.
In retaliatory firing, one of them received a bullet injury, they said, adding that the accused had been sent to a nearby hospital for treatment.
The injured goon has been identified as Imran, a resident of Jarcha town in Gautam Buddh Nagar, said SP Sudhir Kumar Singh.
Imran is wanted in eight criminal cases and carried a reward of 25,000 on his arrest.
His accomplice, Ikrar, somehow managed to escape, the SP said.
A countrymade pistol, two live cartridges and a motorcycle without a registration plate were recovered from them, he added.