Pinjarra Police need help from the community in South Yunderup to help with their investigation into a number of burglaries, thefts from cars and anti-social behaviour in the area in the past few weeks.
Offenders have targeted homes with unsecured doors while residents were at home.
A number of cars have also been broken into around South Yunderup.
Property that was left in the cars has been taken.
Call Crime Stoppers on 1800 333 000 if you have information about these incidents.
Call 131 444 to report suspicious activity.
Police are asking people to make things tougher for crooks by keeping doors locked and by removing valuables from cars.