KENNETT SQUARE, Pa. (CBS) — Police in Kennett Square, Chester County are investigating reports of sewing needles found inside Halloween candy of several young trick-or-treaters.

Police say they were notified at midnight Sunday from someone claiming that chocolate candy bars handed out in the Stenning Hills area of the borough had been tampered with. Authorities say sewing type needles were found inside five wrapped Twix Candy bars given to four different children who had been trick-or-treating door to door in the area of South Union Street and West South Street.

A man told authorities he had seen a post on Facebook from an unknown source describing their Snickers candy had needles in it. Reading the post prompted him to check his own children’s candy and he discovered the needles in the snack size Twix candy.

“We all checked our Twix and Skittles but we only found them in the Twix.”

Police say on Sunday afternoon, a 12-year-old child turned in a Snickers bar that also contained a similar sewing type needle. Authorities say the child had been trick-or-treating in the same area as the other children, whose ages range from 7-12.

“How could anybody do something like that? That’s unbelievable. I’m just in shock,” one resident says.

Cpl. Chris Wills says, “There were four kids involved. They’re not all related, they were two separate families, but they all went trick-or-treating together.”

Wills advises parents, “Maybe break the candy bars. Crush the bar in the package and see if you feel anything.”

In addition to the Kennett Square Halloween candy scare, a pin was also found in a snickers in Woodbury Heights.

There were no reports of any injuries caused by the tampered candy.

Police are urging parents to check all Halloween candy before allowing their children to eat it.

Anyone with information about the incidents is asked to contact police at 610-268-3171 or 610-444-0501.