UPDATE: Evacuation at Weston High School Yesterday Unrelated to Propane Accident Last Week

An odor of propane apparently caused by a "over-pressurized" tank that caused an is not related to another propane incident last week that left one person injured.

Weston Fire Chief David Soar said yesterday's incident was caused by an abundance of pressure in a tank at the science lab construction area that caused an odor of gas that was detectable outside.

Once students were evacuated, Soar said, fire personnel "put water on the tank" to cool it down and "off-loaded" some of the propane.

"We don't know why it was doing what it was doing but we off-loaded it," he said, adding that Eastern Propane, the school's propane supplier, continued emptying the canister and investigated the cause of the pressure.

Soar said the incident was unrelated to , first thought to be a propane explosion, that left one worker injured.

Soar said building was evacuated yesterday "mainly as a precaution" and that no one was injured.

Eastern Propane could not be reached for comment.