Around 20 children were injured Saturday evening after a platform collapsed in a San Diego recreation facility, authorities said.
Officials responded to the scene, near the intersection of Main and Sigsbee streets in the Barrio Logan neighborhood, just before 7 p.m., the San Diego Fire-Rescue Department said on Twitter.
The structure impacted was a recreation business with trampolines and other gymnastics equipment called Vault PK, located at 1699 Main St., according to KTLA sister station KSWB in San Diego.
The platform collapsed while both adults and children were standing on top, officials said. In total, 21 children and two adults were hurt.
At least four of the injured youth were in serious condition with injuries to their spine and neck and were taken to the hospital, paramedics said.
A woman was also trapped beneath the rubble but was freed by rescue teams, KSWB reported.
One of the children's fathers said the kids had just been called up to the platform area to get some pizza, but once all of them were up there, it collapsed.
About 150 youth were in the building at the time, firefighters said.
The deck measured about 10 feet by 30 feet, and firefighters were investigating whether its capacity had been exceeded. The elevated area is normally where parents stand to watch the children play.
Snapchat videos obtained by the San Diego station show the aftermath of the cave in, with shards of glass and other debris scattered across the ground.
The videos, taken by an employee at the gym, also show several firefighters and children in the facility's trampoline area.
No further details were immediately available.