Police say someone took advantage of unlocked doors over the weekend to steal items form cars parked between 11th and 30th streets along West Main Street.

"A lot of times people will walk down the street and shake door handles to see if they can find cars that are unlocked," Belleville Police Capt. Don Sax said. "When they find one they take everything that can quickly grab."

The thefts apparently took place sometime between Saturday morning and Sunday morning. Police received several calls on Sunday to report items missing.

Sax said the burglaries included cars in the 100 block of North 11th Street, the 100 block of North 28th Street, the 100 block of South 29th Street, the 100 block of North 30th Street and the 3300 block of West A Street. The items taken included a portable navigation unit, a radar detector, a cell phone and loose change.

"People need to remember not only to lock their car doors but to keep any items of potential valuable out of sight," Sax said. "That includes electronics, purses, bags, CDs and anything like that."