Shares of Toshiba Corp tumbled as much as 5.8 percent in early trade on Monday after a newspaper report that some trust banks are preparing to sue the company for damages. The Asahi Shimbun reported that several trust banks including Mitsubishi UFJ Trust and Banking Corp [MTFGTB.UL] are set to sue Toshiba after its share price tanked due to a massive accounting scandal that has upended the company. On Friday, Toshiba said it would sell a minority stake in its memory chip business as it urgently seeks funds to offset an imminent multi-billion dollar writedown on its U.S. nuclear business.