Three persons have been arrested for suspected rape and murder of a 30-year old mentally challenged woman Guria whose body was exhumed on Wednesday from a privately-run rehabilitation centre at Dhaniakhali in West Bengal’s Hooghly district.The arrests were made late Wednesday night. The police are also on the lookout for the key accused Shyamal Ghosh who is on the run. Inmates of the home alleged that Ghosh had seriously tortured Guria a few days before her mysterious disappearance, sources said.The authorities of the asylum said that Guria was admitted to the rehabilitation centre for mentally ill people (women) on May 22, 2012. She died on June 26 and buried five days later in a makeshift grave in the backyard of the rehabilitation centre.Women and child development and social welfare minister Sabitri Mitra has ordered a probe into the murder.”Three people including the secretary of the home Uday Kumar Konar have already been arrested in connection with case. Police is investigating into the matter thoroughly,” Mitra said.The minister said that the state government has shifted as many as 80 mentally-challenged inmates from that home to other asylums. “We have also cancelled their licence to run the rehabilitation centre for mentally deranged women,” Mitra said, pointing out that a magisterial inquiry has been ordered into the case by her department.The body of the victim was sent to Chinsurah in the district for post-mortem examination. The post mortem report will come out in next few days, police sources said.The National Commission for Women (NCW) has also sought an action taken report (ATR) from the district administration on the incident.advertisementSenior CPM leader and former West Bengal sports minister Kanti Ganguly dubbed the incident as gross negligence on the part of the state administration and demanded higher level inquiry into the matter. “I want a CBI probe into the incident as the primary investigation suggests it was not a natural death. The question is why her body was buried without giving any information to the police or the woman’s family members,” Ganguly said.