Abe made the comment in response to reports on Monday that the Tokyo District Public Prosecutors' Office has been interviewing his aides over the scandal.
Japan's parliament on Wednesday elected Yoshihide Suga prime minister, with the former chief cabinet secretary expected to stick closely to policies championed by Shinzo Abe.
Suga, 71, won an easy victory, taking 314 votes of 462 valid ballots cast in the lower house of parliament, where his ruling Liberal Democratic Party holds a commanding majority with its coalition par
The ruling Liberal Democratic Party is choosing its new leader in an internal vote to pick a successor to Prime Minister Shinzo Abe, who announced last month that he would resign due to health problem
Chief Cabinet Secretary Yosihide Suga, 71, had formally submitted his candidacy for the Liberal Democratic Party leadership last week.
Yoshihide Suga earned his own tuition while working several part-time jobs to graduate from a university in Tokyo.
Executives of Shinzo Abe’s ruling Liberal Democratic Party met and decided that the September 14 vote for party leader.
LDP officials are making arrangements to have its members in both houses of the Diet meet to choose the party's president.
Suga, who has been serving as the government's top spokesperson since Abe assumed power in 2012, is one of the Prime Minister's closest aides.
After more than seven years in the job, 65-year-old Japan Prime Minsiter Shinzo Abe, announced he would be stepping down owing to his poor health.
Abe's humorous invitation to the next Olympics in Tokyo was a big hit among Brazilian fans, and to a worldwide television audience.
Japan's longest-serving prime minister, Shinzo Abe, said he intends to step down because his ulcerative colitis problem has resurfaced.
A sprightly 52 years old when he first became prime minister in 2006, Abe was the youngest person ever to occupy the job, and was seen as a symbol of change and youth.
Abe has had ulcerative colitis since he was a teenager and has said the condition was controlled with treatment.
On his return to power after a disastrous first term between 2006-2007, Abe cut a deal with the Bank of Japan that saw the central bank implement a policy of unprecedented monetary easing.