AUSTIN, Texas (AP) — Top board leaders of Texas’ embattled power grid operator said Tuesday they will resign following outrage over more than 4 million customers losing electricity last week during a deadly winter storm, including many whose frigid homes lacked heat for days in subfreezing temperatures.

The resignations are the first since the crisis began in Texas, and calls for wider firings remain in the aftermath of one of the worst power outages in U.S. history.

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