Lawmakers plan to question Mizuho Financial Group Inc. officials this month on its loans to yakuza, ramping up political pressure on the top executives of the nation's third-biggest bank by market value.

The Lower House Financial Affairs Committee will seek testimony as part of plans to discuss the mob-loan issue during the week starting Nov. 11, Liberal Democratic Party lawmaker Isshu Sugawara said in Tokyo on Friday.

Mizuho President Yasuhiro Sato is under pressure to explain why his bank failed to address the ¥200 million in loans made to underworld members. The Financial Services Agency is broadening its probe to include inspections of Mitsubishi UFJ Financial Group Inc. and Sumitomo Mitsui Financial Group Inc. from Tuesday.