A group of men broke into a trucking company office in Tochigi Prefecture during the weekend and stole 524 million yen in cash, police officials said Monday.
It is the second-largest amount of cash stolen in a single robbery case, after 541 million yen was taken from a cash delivery van in a parking lot of the Fukutoku Bank's Kobe branch in August 1994.
Police said a group of four or five men broke into Tobu Unyu Tochigi in the town of Minami-Kawachi at around 6:20 p.m. Sunday.
The men threatened two security guards with a stun gun and what appeared to be a handgun before asking for the key to the safe, which contained cash picked up from area businesses. They then bound the guards' hands and legs with adhesive tape, police said.