The incident took place late last night on Akbar Road near India Gate and four youths were arrested in this connection.
Traffic personnel were deployed near India Gate to ensure smooth traffic and late in the night, a group of around 40 bikers came in an unruly way, Satyendra Garg, Joint Commissioner of Police (Traffic), said.
ASI Rajbir Singh was on duty along with constable Prashant and they stopped one of the motorcyclists travelling allegedly at a high speed with someone riding pillion.
In the process of stopping the motorcycle driven allegedly by Gajender Pal Singh (28), Singh sustained fracture on his right hand. The driver was arrested.
"Three other motorcyclists Sonu, Sohan Singh and Faizan were also prosecuted for dangerous driving," Garg said.
"Traffic Police along with local police and PCR are geared up for making India Gate safe from traffic violations and other offences and those who do dangerous driving will be prosecuted under appropriate sections," he said.
Singh and Prashant are being recommended for cash reward and Commendation Certificate by Traffic Police, he said.