RIVERSIDE – A large crane collapsed at Kaiser Permanente Riverside Medical Center on Saturday while workers disassembled the crane and left the center open, but a loading dock and maintenance area were closed.

The collapse began at 2:12 p.m. at the center on Magnolia Ave., according to Bruce Vanderhorst, chief of the riverside fire department battalion. 10800 reported.

“AO Reed & Company was helping Bragg Crane Service remove and dismantle the crane when the crane suddenly overturned,” said Vanderhorst.

The crane’s main boom fell on part of the building that contains trash, a large trash compactor, and the Polk Street emergency room, he said.

A technical rescue team determined that no one was trapped and that there were no civilian injuries, Vanderhorst said. The medical center remained open and fully functional.

CAL-OSHA has been called in to investigate and the north tower’s loading dock and maintenance area have been closed, Vanderhorst said.