If the persons interested in any such property with the petitioner are unknown, it shall be described in the petition in the same manner as is required in the case of taxing unimproved lands of nonresidents, specifying the share held by each petitioner, and stating that it is held with persons unknown.
RSA 547-C:4
1992, 284:57. 2000, 232:4, eff. Jan. 1, 2001.