More than 100 students from the same New Jersey high school developed a rare brain cancer. An investigation says they weren't contaminated there.

• Over 100 people who graduated from the same high school were diagnosed with rare brain cancers.
• Officials in Woodbridge, New Jersey began an investigation if there's a link last month.

An investigation into how more than 100 students who went to the same New Jersey high school developed rare brain cancer found no "relationship between those illnesses," officials said.

Last month, Al Lupiano said he was diagnosed when he was 27 in the late 1990s and in 2021 both his sister and wife were diagnosed with brain cancer. All three went to Colonia High School in Woodbridge, New Jersey.

NBC's Today reported that more than 100 students who went to that high school have been diagnosed with rare brain cancer.

However, Woodbridge Township Mayor John McCormac said an independent investigation found no contamination at the school.

"We are very happy to announce that our extensive testing for both radon and radiation in the interior and exterior of the school building produced no evidence of any cancer causing hazards that warrant further investigation," McCormac said at a press conference last week.

"This is terrific news for the current students of Colonial High School and their parents who are worried about their safety along with current staff members. And it is also great news for all former students who attended and staff that worked at Colonia High School since it opened back in 1968."

T+M Associates, an environmental engineering firm, was asked to investigate a link between the school and brain cancer last month.

McCormac said the investigation found "no cause and effect relationship between those illnesses and the building or grounds at Colonia High School."

Kate McGreevy, an epidemiologist from the New Jersey Department of Health said the school's brain cancer rates are consistent with brain cancer rates in the state and nation.

"The rates are actually consistent in New Jersey with the United States," McGreevy said. "This approach of calculating the expected number was done to provide context to the community."