Tokyo’s Metropolitan Police Department arrested a 39-year-old man in connection with a ¥15 million burglary that took place in the city of Tachikawa in western Tokyo in December.Four men intruded on the dwelling of a man in his 20s on Dec. 4 between around 9:10 p.m. and 9:20 p.m. and took some ¥10.25 million ($64,000) in cash, as well as valuables, such as a wallet and a bag, worth roughly ¥5 million.Police had already arrested six men, including those who actually committed the robbery and a driver who drove them. Investigators believe tokuryū — quasi-gangster groups that thrive on anonymity and a lack of structure — are behind the scheme and have been searching for the masterminds.