An exclusion ban was lifted Sunday for parts of the city of Tamura and the village of Kawauchi in Fukushima Prefecture, allowing residents to enter freely without taking measures against radiation exposure.

But residents from these areas, which are close to the crippled Fukushima No. 1 nuclear plant, will not be allowed to stay overnight, although radiation levels remain relatively low.

It was the first revision to the evacuation zone banning entry to areas within 20 km of the plant since the nuclear disaster triggered by the earthquake and tsunami disaster on March 11 last year.