I found this insect in Bhopal,Madhya Pradesh,India could you please help me identify it?? I think it is some kind of beetle. Approximately 2-3 cm in size.
You've found a specimen of Coridius janus or cucurbit stink bug or red pumpkin bug (don't mix up with the red pumpkin beetle). They betong to the suborder Heteroptera (True bugs).
projectnoah.org: red pumpkin bug