TOKYO, July 20 -- In what might be Japan's most baffling case of ghost guesting, Tokyo police have arrested a 28-year-old man accused of turning a local hotel's booking system into his own personal prank lab.

According to NHK World, the suspect - one Junki Sanuki from the quiet city of Izumo in Shimane Prefecture - allegedly reserved 258 hotel rooms for the same day, all under fake names, all entirely unattended.

The Tokyo Metropolitan Police say the reservations, made for a hotel in Ota Ward in December, totalled roughly Euro7.7 million (about RM208,000).

But that was just the tip of the roomberg - authorities uncovered more than 580 bogus bookings across other dates too, clocking in at over Euro17 million in total.

Sanuki, a former ...