Heavily populated areas around the Fukushima nuclear plant are exposed to radiation up to 13 times higher than the accepted limit, as the government fails to provide accurate measurements, Greenpeace organization said on Tuesday.

The authorities are wasting time cleaning up evacuated areas, instead of prioritizing decontamination efforts in places where people live, Greenpeace said.

The organization found some school facilities and parks in Fukushima city where radiation was above 3 microsieverts per hour. The legally recommended limit is 0.23 microsieverts per hour.

“Decontamination efforts are seriously delayed and many hot spots that were repeatedly identified by Greenpeace are still there,” it said.

“It is especially disturbing to see that there are many hot spots around playground equipment, exposing children who are most vulnerable to radiation risks”.

“The government continues to downplay radiation risks and give false hope (of returning home) to victims of this nuclear disaster,” a representative of the organization said.