EAST MEADOW - Several homes were evacuated today after a minor leak in a liquid oxygen tank on the property outside of Nassau University Medical Center (NUMC).

Click "NEXT" under your video player to watch Chopper 12 video from the scene.

According to police, workers were performing routine maintenance on the 11,000-gallon tank when a valve broke.

A limited evacuation took place on Clearmeadow Drive, behind where the tank is located, as a precaution. Officials say the leak posed no danger to patients or employees at the hospital.