WORCESTER, Mass. (AP) — Officials have released the latest results of testing at a Massachusetts charter school where elevated levels of toxic chemicals were detected.

The state Department of Environmental Protection tells The Telegram & Gazette tests shared with Abby Kelley Foster Charter Public School show the amount of trichloroethylene, or TCE, in the air is below hazardous levels.

School officials sent a letter to families saying there is no danger to people inside the building.

Agency spokesman Joe Ferson says they have been working with the school to mitigate the issue since tests in June indicated elevated levels of TCE.

The source is suspected to be a nearby industrial site.

Ferson says additional testing has been scheduled.

The school will host a public meeting on the issue Aug. 15.

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Information from: Telegram & Gazette (Worcester, Mass.), http://www.telegram.com