MIDDLETOWN, Conn. — Police are reporting a gas explosion and fire at a power plant in Connecticut.

Several ambulances and fire trucks responded to the explosion on at the Kleen Energy Systems plant in Middletown on Sunday, and witnesses say black smoke was visible for miles.

No details were immediately available, but police advised people to avoid the area.

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Braves first baseman Matt Olson (left) is greeted by Ronald Acuña Jr. after batting during the MLB Home Run Derby as part of the All-Star Game festivities on Monday, July 14, 2025, at Truist Park in Atlanta. (Jason Getz/AJC)

Credit: Jason Getz/AJC