A Japanese company tasked with cleaning up Fukushima, the site of the worst nuclear disaster since Chernobyl, has admitted that its attempts to probe the site are failing repeatedly due to incredibly high levels of radiation.

The nuclear meltdown at Fukushima in 2011 was triggered by an earthquake and tsunami which left around 18,000 people dead and more than a million buildings destroyed.

At least 100,000 people living near the plant were forced to leave their homes. High rates of mental health problems and post-traumatic stress disorder have been observed within the displaced population.