Hackers infiltrated the Emergency Alert System (EAS) of local station KRTV in Great Falls, Montana, and issued the zombie alert, the station said on Tuesday.

Viewers were warned of a so-called zombie apocalypse and advised not to tangle with the monstrous creatures.

Afterward, the FCC sent out an alert to all EAS participants, requiring them to take immediate action.

Stations were urged to secure their equipment, including resetting passwords, and securing firewalls.