Yoshitane Yamasaki a man in Japan who allegedly detained his mentally ill son in a small cage for more than twenty years was arrested on Saturday in western Japan, police and news reports said.
Police arrested 73-year-old suspect in his house in Sanda in Hyogo prefecture on suspicion of imprisoning his son, now aged 42.
Further details of the case were not available as the investigation is still underway, the spokesman said.
The son has lived inside a small wooden cage, dimensions being one metre (3.3 feet) high and 1.8 metre wide, built-in a prefabricated hut next to the main house.
The suspect has admitted his guilt.
“I made my son live in a cage for more than 20 years because he has mental problems and acted up,” the father earlier told city officials, according to public broadcaster NHK.
The father said he fed his son and let him bathe every other day.
The son, whose name has been withheld, is in a stable condition but is suffering from a bent back, NHK said, adding that he was sent to a welfare facility.