Mumbai: The mystery over whether Indrani Mukerjea, prime accused in the murder of her daughter Sheena Bora, attempted suicide deepened on Saturday amid conflicting forensic findings on suspected drug overdose even as she remained critical with next 48 hours being crucial for her. 43-year-old Indrani was rushed from the Arthur Road jail and admitted to the state-run J J Hospital here after she collapsed on Friday leading to speculation that she might have attempted suicide in a suspected drug overdose.