Police are appealing for information after another spate of car break-ins on the South Hill.
Five vehicles in the South Hill area were broken into overnight on Monday and a variety of property was taken.
Reports of the break-ins came from residents of Perth St, Mersey St, Wye St and Dove Place.
Oamaru police Sergeant Blair Wilkinson said car owners in Oamaru continued to make it easy for opportunistic thieves by leaving their vehicles unlocked.
"Four out of the five vehicles were unlocked, so people are still leaving vehicles unlocked with valuable items in them," he said.
"Police would like to remind people not to leave valuable items in the cars."
Cash, sunglasses, wallets and CDs are among the list of reported missing items.
"People need to lock their cars, not leave valuables in them and, if possible, park them in their driveways and garages," he said.
Leaving cars unlocked was a habit people had developed, and had probably done it for years without having a problem, Mr Wilkinson said.
"But it's been made very easy for thieves to go about their business and obtain these items if people leave valuable items in their unlocked cars overnight," he said.
If anybody sees anything suspicious, particularly around the South Hill area, contact the Oamaru police on 03 433 1400.