Transcript for Razor Blades Found Taped to Playground Equipment
We'll turn now to a safety alert for parents. It's a scary trend at playgrounds, pranksters taping razor blades to jungle gyms and monkey bars, the latest in a park outside Philadelphia and Ron Claiborne has the story. Reporter: This morning, instead of slips and falls at the neighborhood park, parents are now being asked to watch out for a more sinister danger, razor blades hidden in the playground. 2-year-old maddon Jenks was on his dad's shoulders when he reached are for the monkey bars. He said ouch. Jason put him down because he thought maybe it was hurting his hands, the coldness of the bar so he put him down and then he started bleeding. Reporter: The toddler had cut his finger on a blade. We looked and there was razor blades were everywhere. Reporter: On the monkey bars, rock climbing wall, the fire pole, even the bottom of the slide. Someone had glued a dozen straight edge razor blades all over the playground equipment. A dangerous prank that just happened again, this time at a park outside Philadelphia. I just don't know why anyone would do that. Reporter: On Tuesday, brookhaven, Pennsylvania, police removed several blades that had been duct taped to playground equipment. No one was hurt. But police are now warning parents to check all park gear before letting children play on it. Sadly, cases like these have occurred before in cities across the country. Like in San Diego last September, authorities there used metal detectors to find ray sores that had been placed blaze side up in the grass. Open. Reporter: As for little maddon, luckily he's going to be okay. It could have been horrible. It could have sliced his hand open completely. Reporter: For "Good morning America," Ron Claiborne, ABC news, New York.
This transcript has been automatically generated and may not be 100% accurate.