The deceased identified as Head Constable Ram Kanwar Meena, posted at Delhi Police's third battalion, was escorting an undertrial, Irfan alias Chaini Pehlwan, at court number 73 in east Delhi's Karkardooma court when the incident took place around 11 AM, said a police official.
"While Meena was hit by four bullets, Irfan sustained two. They were both rushed to Hedgewar Hospital, where the former was declared brought dead, following which the police registered a case of murder and attempt to murder," said DCP (East) B S Gurjar.
The assailants tried to escape but the lawyers in the court, along with security personnel, held them and handed them over to the police team which rushed to the spot after the incident, said a police official.
"The detained persons have so far claimed to be minors and they were contract killers hired by one Naseer, who heads a gang in the Trans-Yamuna region and is presently lodged in jail in connection with a murder case," said a police official privy to the investigation.
"A police team is presently checking records to ascertain the actual age of the accused persons. One of them has turned out to be a 17 year and nine month old boy who was one of the five juveniles apprehended for the stabbing to death a youth at southeast Delhi's Ambedkar Nagar area in broad daylight in August 2014," the official said.