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It was an early morning of the living dead for some Mainers.
Drivers may have gotten a chuckle out of an electronic message board in Maine warning of zombies, but city officials were not amused.
The sign at a Portland road construction site was changed by a hacker to read "Warning Zombies Ahead!" on Wednesday morning. It originally read "Night work 8 pm-6 am. Expect delays."
City spokeswoman Nicole Clegg says the signs are a safety precaution and changing it could have led to driver distraction.
She tells The Portland Press Herald tampering with a safety device is a misdemeanor punishable by up to a year in jail and a $1,000 fine.
She says it's not clear who changed the sign, but it's not the first time it has happened.