Zombies in Florida? What in the world is happening?

Zombies are still in full force apparently.

This past weekend in Florida, as reported by The Sun Sentinal, another zombie alert was issued. At 1:41 AM Sunday Morning, the power went out in Lake Worth, Florida. And normally when there is a power issue, an alert is sent out. But the alert, instead of informing customers of the issue, instead said that zombies had invaded. The city, of course, had to say there were no zombies present in Florida. They also believed that their alert system got hacked.

So in short, another town was attacked by fake zombies. This makes me wonder one thing. Did the people who hacked that electronic sign in Pennsylvania, also somehow hack the alert system in Florida? And if it was them, how in the world did they hack both?