FORT LAUDERDALE (CBSMiami/CBS Local) – Officials in one Florida city are investigating how a power outage triggered a zombie alert to be sent out to residents on social media.

It happened early Sunday morning in Lake Worth near Palm Beach and made a reference to a fictional town in AMC’s “The Walking Dead.”

The message read: “Power outage and zombie alert for the residents of Lake Worth and Terminus. There are now far less than seven thousand three hundred and eighty customers involved due to extreme zombie activity. Restoration time uncertain.”

(Screengrab via CBS Miami)

Terminus is a location referenced in Season 4 and Season 5 of “Walking Dead”.

Well, the power was back on in about half an hour.

The city has apologized for the message that may have frightened some residents.

Officials are now looking into how the message was altered and who is responsible. They add that they currently have no zombie activity.