Five cars had windows smashed and four had goods stolen from them in one day, in what Hills Fleurieu Police are calling a "series" of break-ins.
On Friday, May 15, two cars at Goolwa South and one each at Carrickalinga, Hindmarsh Valley and Myponga were broken into.
Witnesses saw a man aged in his 30s with a stocky build, possibly in a white station wagon or an old grey SUV, in the area at the time of some of the incidents.
The first incident occurred on Gold Coast Drive, Carrickalinga between 11.50am and 12.20pm.
The thief stole a bag with 'Tarnanthi' in colourful lettering, a wallet, and a puffa jacket after smashing through the window.
The next break-in occurred on Hindmarsh Tiers Road, Hindmarsh Valley, where a car had been parked adjacent a gate at 1.35pm.
After smashing the front passenger window, the thief stole a Tom Tom GPS and a Lenovo ThinkPad laptop in a black canvas bag.
Over at Goolwa South, someone smashed the window of a car on Barrage Road between 3pm and 3.18pm and stole a Camel Mount backpack, wallet with cash, and a lunchbox.
On the same road at 3.30pm, another car window was shattered but nothing was stolen.
On Hansen Street at Myponga, a car window was smashed sometime between 3.50pm and 4.50pm, and a briefcase with school papers and a lanyard decorated with North American Indian art was taken.
Anyone has any information which may help with the investigation is urged to contact Crime Stoppers on 1800 333 000 or at www.crimestopperssa.com.au
Police would like to remind members of the public to be vigilant about securing property in their vehicle to help prevent opportunistic thieves.
For safety and security information, visit www.police.sa.gov.au/your-safety/crime-prevention-and-security