Police say glass and metal has been found in the same park where razor blades were found last month.
They're investigating the incident at June Callwood Park, in the Lakeshore and Strachan area.
Police say they got the call from someone who lives in the area, who told police she picked up at least 30 pieces.
In an email, a local resident told our sister station, CP24, she believes it was deliberate because there were no big pieces and the debris was scattered only in the gravel.
So far there have been no reports of injuries. Police are asking anyone with information to call them at 416-808-1400.
Last month, loose razor blades were found mixed in with the gravel in the park.