Lawyers for Tatsuya Ichihashi urged prosecutors and police Thursday to improve their interrogation methods, arguing that a prosecutor had told the suspect during a grilling that he could be hanged for the 2007 murder of Briton Lindsay Ann Hawker. "It is illegitimate to investigate by making up scenarios," one of the lawyers told a news conference, during which they quoted Ichihashi as saying he was told by a prosecutor at the Chiba District Public Prosecutor's Office that the death sentence is a possibility.