Surveillance video caught a suspect rummaging through an unlocked car in a Dix Hills driveway.
The footage was captured on Campbell Drive early Wednesday.
Nothing was taken in the incident, but police say there have been at least three other similar incidents in the area since Nov. 24.
Those cars were located on Kilmer Avenue, Pickering Place and Gallatin Drive.
Police say a laptop, backpack and tennis racket were stolen.
Authorities are reminding everyone to lock their cars.