HOUSTON – A school district, a health department and an outside company are trying to figure out what made band members sick during a football game.
More than 20 members of Austin High School's band became ill at Barnett Stadium in southeast Houston on Friday night.
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The stadium was evacuated and several students ended up going to hospitals.
Band member Ezequiel Galvan said he was diagnosed with carbon monoxide poisoning.
The students said they experiences nausea, weakness, loss of appetite and headaches.
The Houston Fire Department's hazardous materials team tested the stadium for chemicals. They said they did not find any traces or airborne toxins.
Houston Independent School District officials said they are working with the city's health department and an industrial hygienic company and other experts to check the stadium and figure out exactly what happened.
Worried parents said answers cannot come soon enough. Some parents visited Austin High School's administrators to get an explanation.
"By now you would have thought we would have gotten phone calls from HISD," Galvan's father, Alberto, said.
Alberto Galvan said he asked the principal if the school would pay for the students' medical treatment.
"He told me to use our private insurance for the time being," Alberto Galvan said.
School district officials said parents should not assume that the district is liable since the source of the illness remains a mystery.
Several parents said band practices have been canceled until further notice.
Two football games are scheduled to be played in Barnett Stadium on Thursday. The school district will decide by Wednesday morning if the games need to be moved to another location.