Hawera police believe a gang of burglars are targeting unsecured properties, making off with electronic goods, jewellery and cash.
Senior Sergeant Mike Hannah said there had been six burglaries in the past fortnight around the town, all of which remained unsolved.
It was highly likely the same people were involved in the offending.
Although the crimes were being committed at various times of the day and night, all the houses involved had been left unsecured by their owners.
Hannah said the offenders had entered homes through unlocked windows or doors.
"They're gaining entry, ransacking and then departing," he said.
Hannah said the latest burglary reported to police occurred on June 18 or 19 on Grant Vc St.
Three burglaries were also reported from owners of properties on George St, Caplen St and Glover Rd last weekend.
Police believed a vehicle was being used as part of the offending but had no information about the make or model.
Hannah said members of the public should call police if they saw anything out of the ordinary.
Police also wanted to hear from anyone who had been approached by someone trying to sell them items.
In New Plymouth, a home on Mangorei Rd was burgled this week and a car on Branch Rd was also broken into.
Sergeant Bruce Irvine said forensic experts were investigating.
Anyone with any information about the Hawera or New Plymouth burglaries can contact their local police station or call Crimestoppers on 0800 555 111.
- Taranaki Daily News
Testing drugs on animals is:Related story: Animal tests 'key' to brain disease cures