Wife and son of an additional sessions judge were shot at by their armed guard on Saturday in Gururam's Arcadia Market. The guard was later arrested by the police.
The incident took place in Gurugram's Sector-49, ANI reported.
The injured have been identified as Ritu (45) and Dhruv (18), wife and son of Additional District Judge Krishan Kant.
The Deputy Commissioner of Police, East Gurugram Sulochana Gajraj said that both wife and son have been admitted to a hospital. Both are in critical condition.
The guard has been identified as Mahipal who had been working with the judge for the past one and a half year.
The police and forensic teams were present at the spot and investigations are underway.
The DCP said that they are interrogating Mahipal but the reason for the crime is yet to be ascertained.
"Some locals informed the police about gunshots being fired outside the Arcadia market. When a police team reached the spot, they found Ritu and Dhruv lying in a pool of blood," Gajraj said.
She said Ritu has suffered bullet injury in her chest, while Dhruv in his head. "They were taken to the Medanta Hospital where they are undergoing treatment but their condition is critical," according to the officer.
Gajraj said the police team could not promptly find Mahipal there. "He was later arrested from Faridabad."
Gurgaon police PRO Subhash Bokan said he was being interrogated to establish the reason why he opened fire.
After initial interrogation, police officers said Mahipal was a Haryana police head constable and was serving as a personal security guard of the judge for the past two years.
He had been demanding leave to go home for the past few days but this was not denied. This might have led to him suffering from depression, the officers said.
"The judge also used to scold him often," one of the interrogating officers said.
On Saturday also, the judge's wife scolded him inside the car when they were going to the market, the officer said. "He had a grudge against the judge."
In video footage of the incident recorded by a witness, Mahipal is seen with the gun in his hand. He was also seen trying to push Dhruv inside the car as he laid listless on the road.
(With Agency Inputs)