Whoever, in order to the committing of extortion, puts or attempts to put any person in fear of an accusation, against that person or any other, of having committed, or attempted to commit, an offence punishable with death or with ¹ [imprisonment for life], or with imprisonment for a term which may extend to ten years, shall be punished with imprisonment of either description for a term which may extend to ten years, and shall also be liable to fine; and, if the offence be punishable under section 377 of this Code, may be punished with ¹ [imprisonment for life].