A Cobden resident arrived home yesterday morning to find their house had been burgled, with the theft of about $500 of frozen whitebait from a freezer.
The burglary at the upper end of Bright Street happened some time between 6am and 9am.
Senior sergeant Paul Watson, of Greymouth police, said the thief had to have known the occupant was away.
The whitebait was the only item stolen, from a freezer in the kitchen area.
The whitebait burglar had forced a slightly ajar window to gain entry, but it would have taken "a bit of effort".