A television station's regular programming was interrupted by news of a zombie apocalypse on Monday.

The Montana Television Network says hackers broke into the emergency alert system of its Great Falls affiliate KRTV and its CW station.

KRTV says on its website the hackers broadcast that "dead bodies are rising from their graves" in several Montana counties. The network says there is no emergency and its engineers are investigating.

"The message did not come from our station, and appears to be the result of a hacker. Our engineers our looking into the origin of the alert to make sure a similar occurrence does not happen again," KRTV says.