Earlier, SP ( East) OP Tripathy said one of the killers, Suraj, has been arrested while three others, including the prime accused Sachin alias Cheena, are still absconding. Police have launched a manhunt for Sachin in Ujjain.
Police said Sachin, his brother-in-law Suraj, Sonu and Pintu had gone to Gupta's clinic for treatment. Gupta reprimanded them for smoking inside the clinic and also told them to remove their shoes. At this the killers countered by pointing out that they ( Gupta and his son Kuldeep) were also wearing shoes. One thing led to another and the would- be patients turned assailants and stabbed Gupta.