Police say razor blades were found duct-taped to playground equipment at a park outside Philadelphia.
Police in the Delaware County town of Brookhaven say the blades affixed to equipment in Eaton Park could have injured children playing in the area.
They said other parks in the town had been checked and were clear, but they will be checked by both patrol and plainclothes officers on every shift.
"It's been great to have when you can walk out your backyard and have all this space, but I mean now you've got to think twice because you never know whose going to be around," Brandon Farren, a resident, told MyFoxPhilly.com
On their Facebook page, police asked parents to check equipment before letting children play, and said older, unescorted children should be warned as well.
Police credited maintenance personnel for discovering the vandalism. No injuries were reported.
A week ago, authorities in western Illinois found a dozen razor blades glued to playground equipment in a city park in East Moline.
The Associated Press contributed to this report