Section 2
SEC. 2. Before granting the gratuity provided for in the preceding section, the municipal council, municipal board, or city council concerned may require the municipal president and the division health officer, or the mayor and chief health officer of the city, as the case may be, to carefully investigate the cause of the disability or death of the policeman in order to determine whether he actually contracted his disability or death in the line of duty, and if after due investigation and medical advice it is found that the disability or death of said policeman were due to this cause, he shall report the same to the council or board, as the case may be, for the granting of a gratuity.