HOUSTON - At least four middle school students were sent to a hospital after suffering from heat-related problems due to an evacuation.

Houston: Middle school students hospitalized

What we know:

According to Houston Fire officials, a gas leak was reported at about 10:30 a.m. Wednesday at McReynolds Middle School on Market Street.

The school was evacuated while CenterPoint was working on the leak.

Some students reportedly experienced heat-related illnesses while they were outside. Fire officials say four to six students were taken to a hospital.

They also clarified that the illnesses were not related to the gas leak.

Houston ISD said the building was later deemed safe to re-enter. The evacuation lasted about 1.5 hours before classes resumed.

What we don't know:

No other details

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