he may file an annulment petition before the family court against her for delaration of this marriage as null & voidn under section 12 of Hindu Marriage Act.
apart from this case he may file a criminal case under section 495 of IPC against her before criminal court.
read the section 495 of IPC carefully
495. Same offence with concealment of former marriage from person with whom subsequent marriage is contracted.—Whoever commits the offence defined in the last preceding section having concealed from the person with whom the subsequent marriage is contracted, the fact of the former marriage, shall be punished with imprisonment of either descripttion for a term which may extend to ten years, and shall also be liable to fine.