The assailant in a knife attack in Kawasaki last week may have scouted the scene four days before he went on the stabbing rampage that left two dead and more than a dozen others injured, investigative sources said Monday.A man who appeared to be Ryuichi Iwasaki, 51, was captured on the morning of May 24 by security cameras installed around the crime scene as well at nearby Noborito Station and Yomiuriland-mae Station on the Odakyu Line, which is the closest station to his home in the city's Asao Ward, the sources said.Last Tuesday, Iwasaki committed suicide shortly after he attacked a group…READ FULL ARTICLE