TRINITY, Texas - Three workers died while working on a sewer in Trinity County on Wednesday afternoon, and officials believe they were exposed to hydrogen sulfide gas.

3 workers die in Trinity

What we know:

According to H2O innovation, two of their employees and a contractor died while conducting repairs on a sewer in Trinity.

According to Trinity County Sheriff Woody Wallace, emergency crews responded to the scene in the Westwood Shores area and learned that three people were unconscious. The sheriff says the incident happened inside of a manhole, and it was believed that they were exposed to hydrogen sulfide gas.

A shelter-in-place was issued for residents in the surrounding areas while authorities made sure the gas was contained underground. It was later lifted after they determi

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