Police say Pa'uvi Limu used a hammer to break a window to get into the room before walking out the front door.
An officer saw Pa'uvi walk out and thought he was a policeman but got suspicious when he checked the room and found it had been broken into.
The officer pursued Pa'uvi and apprehended him a couple of villages from the station.
The marijuana was part of a haul of more than 400 plants taken during a 2019 raid at Faleatiu village.