An 18-year-old boy was referred to prosecutors Thursday for allegedly stealing about ¥15 million ($134,300) worth of cryptocurrency last year by hacking a digital currency storage website, police said.

The case is the first in Japan in which criminal charges have been pursued against a hacker over cryptocurrency losses, the police said.

The boy, from the city of Utsunomiya, Tochigi Prefecture, whose name is being withheld because he is a minor, allegedly stole the money after hacking Monappy, a website where users can keep the virtual currency monacoin, between Aug. 14 and Sept. 1 last year.