(CNN) -- More than 100 people were injured, 12 of them critically, when a metal platform at a soccer stadium collapsed during a youth tournament in Lima, Peru, the state-run news agency Andina reported.
The viewing stand installed in Monumental Stadium in the Ate district was packed with people and started swaying just as the teams were preparing to march in a parade Friday to commence the Copa Crema Jose Luis "Puma" Carranza tournament, Andina said.
Fire department commander Alfonso Panizo said the most serious injuries were to the neck and back, with some broken ribs. Many minor injuries were treated at the scene, and the individuals went home on their own, fire officials said.
Children who witnessed the collapse told Peruvian television that the overloaded platform included candy vendors.
"Everyone piled in. The platform moved from one side to another, and everyone started screaming. Then the platform went over to one side," the state-run media agency reported children as telling television.