A rescue is underway at Karrinyup Shopping Centre after a worker fell off a ladder at a redevelopment site.

Emergency services were called just after 11am, and it’s understood an 18-year-old may have suffered a spinal injury.

The Department of Fire and Emergency Services said the worker fell from a ladder onto a platform that is 11 metres off the ground.

Four crews from St John Ambulance are at the scene and a number of fire crews were called in to assist.

6PR listener Jacob said it doesn’t look good.

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(Photo: Nine News.)