Vikram Joshi was returning home in Vijay Nagar area with his two daughters on a motorcycle when he was waylaid by over half a dozen armed men at around 10.30 pm on Monday.
"We are not inclined to interfere on the decision taken," the apex court said.
It is alleged that the attackers included a group of men against whom Joshi had filed a complaint on July 16 accusing them of harassing his niece after he had objected to their betting racket in the locality.
The government told the apex court that the decision whether or not to allow refugees to settle in the country was best left to the Executive.