Thieves have made off with anchors from a boom protecting an estuary from the Rena oil spill.
Maritime New Zealand national on-scene commander Nick Quinn said the theft at the Waikareao Estuary yesterday had hit a sour note with the clean-up response.
"It's extremely disappointing and frustrating to see this kind of behaviour from a few idiots, when so many others are working extremely hard to clean up the oil spilt from Rena and protect the beautiful Bay of Plenty coastline from more harm,'' he said.
Clean-up efforts continue on Bay of Plenty beaches today, with Maritime New Zealand calling for more volunteers.
Mechanical beach-cleaning equipment, including sand sifting and tilling machines, was given a trial run yesterday.