MILPITAS (CBS SF) — A construction worker fell and was impaled on a section of rebar in the hills east of Milpitas Thursday afternoon, according to fire officials.

The fall was reported at 4:22 p.m. at a site around one mile east of 10000 London Drive, where construction crews were apparently working on a water tank, officials said.

READ MORE: Suspect Killed In Unincorporated Hayward Deputy-Involved Shooting

The victim was found at the end of a private dirt rod, and by the time emergency crews arrived had already been removed from the rebar.

READ MORE: Big Rig Driver, CHP Officer Rescue Worker Trapped By Burning Truck

Paramedics called in a medical helicopter and the patient was transported to Stanford Medical Center for treatment of his injuries.

Officials did not have an update on the construction worker’s condition Friday.

MORE NEWS: UPDATE: Police Shootings Protest In Oakland Turns Violent; Windows Broken, Fires Ignited; Businesses Vandalized

© Copyright 2015 by CBS San Francisco and Bay City News Service. All rights reserved. This material may not be published, broadcast, rewritten or redistributed