Buildings are silhouetted as the night sky is illuminated by blue light in New York, on Thursday, December 27. After initial reports of a transformer explosion at a Consolidated Edison Inc. power plant, the power company said the light came as part of an electrical fault that caused an "arc flash."
Jeenah Moon/Bloomberg/Getty Images

In pictures: Eerie glow over New York skyline

Updated 3:10 PM ET, Fri December 28, 2018

Buildings are silhouetted as the night sky is illuminated by blue light in New York, on Thursday, December 27. After initial reports of a transformer explosion at a Consolidated Edison Inc. power plant, the power company said the light came as part of an electrical fault that caused an "arc flash."
Jeenah Moon/Bloomberg/Getty Images

An electrical flash at a Con Edison substation in Queens temporarily lit up New York's skyline in a brilliant blue on Thursday night, December 27.

Despite the eerily glowing color, there was no alien invasion.

Instead, the light came as part of an electrical fault that caused an "arc flash," Con Edison spokesman Bob McGee said, similar to lightning.

The New York Police Department initially said there had been a transformer explosion, but the power company later said no explosion occurred.