Under Section 13 of the Explosives Act, 1884, which of the following persons may arrest without warrant?

Section 13 allows apprehension without warrant by a police officer, by the occupier of the place or his agent, servant or other authorised person, or by agents or servants of the railway administration, the port conservator or the officer in charge of the aerodrome. The power is not confined to the police and is not given to the licensing authority.