LOUISVILLE, Ky. (WDRB) - More than 4,000 LG&E customers lost power after an early morning substation fire, according to LG&E spokesperson Chris Whelan.

A transformer blew out at a substation located along Imperial Terrace and Rockford Lane in Shively around 1 a.m. on Sunday.

The outage caused sparks, which led to a field fire.

No homes were damaged by the fire and the Shively Fire Department was able to put out the flames.

Neighbors say the transformer sounded like an explosion.

"While we were standing back there, three more explosions sounded as we were standing back there. It kind of made me jump, because there were sparks that flew. The whole transformer system went up in lights and made a really big boom," said Josh Beams, who heard the explosion.

Most affected customers had their power restored by 2 a.m., Whelan said.

LG&E is still investigating, but officials believe the outage was caused by an equipment malfunction.

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