According to Article 22-2 of Land Expropriation Act, if an interested person has objection over the amount of compensation, he may, within thirty (30) days from next day following the expiration of the public expropriation announcement period, raise the objection by submitting a written statement to the municipal or county (city) competent authority. Upon receiving such an objection, the municipal or county (city) competent authority shall forthwith investigate the matter and notify the interested person of the findings and decision made thereon in writing.