A ninja museum located in central Japan said Thursday a safe containing cash totaling over 1 million yen ($9,400) has been stolen from its office.The Iga-ryu Ninja Museum in Mie Prefecture, dedicated to the history of the famous Iga clan of ninja -- covert agents in feudal Japan -- notified police after a security alarm at the museum's office was activated at around 1:30 a.m. Monday.Related coverage:Aspiring ninjas swamp Japan city with inquiries for dream jobNinja proficiency test to be held for 1st time in Tokyo2 rival Ninja cities join hands to boost tourismA few minutes later, police fo…READ FULL ARTICLE