Further environmental testing has been ordered after potentially harmful chemicals were detected within a Massachusetts school.

Tests completed in early June found high levels of trichloroethylene in the air at Abby Kelley Foster Charter Public School's high school in Worcester.

Trichloroethylene is a liquid used to remove grease from metal and is found in paint removers and varnishes. It increases the risk of developing cancer, according to the U.S. Department of Health and Human Services.

Brian Haas, the executive director of the school, said the chemicals were detected "in the vicinity of a loading dock and mechanical room" at the high school. He assured families the school is working with state officials and that there is no "immediate risk to those at the property."

Retesting will be held by Thursday.