An ayurvedic doctor was stabbedto death by four persons at his clinic here on Thursday evening, police said.The opposition BJP claimed that the deceased was an office-bearer of its medical cell.Dr Jeevan Jalchhatri (45) was at his clinic in Bhatagaon locality when four men stabbed him following an argument, a police official told PTI.One of the accused was immediately arrested. The other three were thrashed by locals and received minor injuries. They were admitted to a local hospital and will be arrested after they are discharged, the official said.