May 22 (UPI) -- Officials in a Florida city apologized for an emergency alert that warned of a real power outage and a not-so-real "zombie alert."
The alert, sent out by the city of Lake Worth early Sunday, warned of a "power outage and zombie alert for residents of Lake Worth and Terminus," referencing a city from AMC's The Walking Dead.
"There are now far less than seven-thousand-three-hundred-eighty customers involved due to extreme zombie activity," the notice said. "Restoration time uncertain."
City officials said they are investigating the apparent prank and they do not believe an employee or former employee is to blame.
"We are looking into the reports that the system mentioned zombies," Ben Kerr, communications specialist for Lake Worth, said in a statement. "I want to reiterate that Lake Worth does not have any zombie activity currently and apologize for the system message."
Kerr said 7,880 customers were affected by the power outage and electricity was restored in about 27 minutes.