After a meltdown at the nuclear plant six years ago, thousands of residents were forced out of their towns, which was basically an invitation to wild boars to flood the area looking for food, according to CNBC.
A wild boar in a residential area of an evacuation zone near the Fukushima Daiichi nuclear power plant.
The town of Namie, located 4km (2.5 miles) from the Fukushima power plant, is scheduled to see residents return at the end of March.
After people deserted the towns, wild boars emerged from local forests to scavenge for food and, according to local media, have flourished.
The Fukushima Daiichi nuclear accident was one of the major consequences of the natural disaster and tsunami on March 11th 2011 that left more than 15,000 people dead in Japan.
Mayor Tamotsu Baba of Namie, a seaside town run over by boars, confessed to Reuters, "It is not really clear now which is the master of the town, people or wild boars".
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They worry that the toxic beasts could attack people returning to abandoned streets claimed by the animals, which are reportedly no longer afraid of humans.
Authorities in the town of Tomioka say they have killed 800 boars so far, but claim that is not almost enough.
The government is telling residents who do not return to homes that they risk losing housing benefits - which multiple reports are citing as a violation of human rights.
Reports state that teams of hunters have been dispatched to cull the boars from the towns of Namie and Tomioka.
While enraged, the boars have been known to attack the few people who remain in the area. "They began coming down from the mountains and now they aren't going back".
Since last April 300 boars have been trapped in operations that occur twice a week. More than half of the 21,500 former residents have decided not to return, citing concerns over radiation and the safety of ongoing operations at the nuclear plant, which is now being decommissioned.