JERSEY CITY, N.J. (CBSNewYork/AP) — Twelve people were sickened after being exposed to coolant that had leaked from an air conditioning unit at a New Jersey college.

Two of the 12 people who got sick Monday at New Jersey City University were taken to a hospital, but the rest were treated at the scene.

None of the injuries were considered serious.

School officials told The Jersey Journal that a contractor was removing the air conditioning unit from the Education and Professional Studies building and had drained the coolant last night. But some coolant apparently leaked and made its way through the duct work.

Officials said the coolant isn’t poisonous.

People started getting ill around 9:30 a.m., and the building was soon evacuated. No classes are taught at the building, which should reopen Monday.

(TM and Copyright 2012 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2012 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)

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