"Creepy" and "suspicious" behaviour has prompted a police warning to tradies, who are being targeted while they sleep.
Western Bay of Plenty area prevention manager Acting Inspector Phil Gillbanks said there had been a concerning increase in the number of tradies being targeted by thieves, particularly in the Papamoa area.
Thieves were often targeting tradies' work vehicles parked either on the street or in their driveways at night while they slept.
Gillbanks said there was more opportunity at this time of year for criminals due to the longer nights. Tools of choice were the more expensive and heavy duty items like nail-guns, he said.
"We're talking about high-end building power tools," Gillbanks said.
"It is concerning, particularly as tradies' tools affects people's lives. A tradie can't go to work if he doesn't have his tools. That affects so many people. It's also concerning how many people must be willing to turn a blind eye, because these tools have to be going somewhere."