India, Feb. 19 -- Weeks after a 68-year-old medical equipment store owner was injected with ketamine and strangled to death inside his shop in north Delhi's Sarai Rohilla, the Delhi Police arrested a quack and two ward boys for robbing the victim, injecting him with the drug, and strangling him over an ultrasound machine, officers aware of the development said on Tuesday.

The incident took place on February 1 when the deceased, Ranbir Singh, was found lying in a pool of blood inside his basement store at a shopping complex in Vivekanandpuri, Sarai Rohilla. Singh, a resident of East Moti Bagh, sold ultrasound and other medical equipment and also exported machines to clients. According to police, Singh's body was discovered by locals and c...