A man arrested in connection with a stabbing attack at a rubber manufacturer's factory in central Japan had previously been employed there, a source familiar with the matter said Saturday.Masaki Oyama, 38, was arrested following an attack on Friday at the Mishima Plant of Yokohama Rubber Co. that left 15 employees injured. Oyama, a resident of Mishima in Shizuoka Prefecture, has been identified by police as currently out of work.The police suspect that Oyama wielded a survival knife in the incident, indicating that he had a strong intention to kill.An emergency call was made at around 4:30 …READ FULL ARTICLE