Japan's top government spokesman ruled out the issuance of deficit bonds to fund an economic stimulus package planned for the autumn, hinting at the use of construction bonds for longer-term investments.

"We want to make full use of every possible resource, including for financing, to make it robust," Chief Cabinet Secretary Yoshihide Suga said in an interview Saturday in Tokyo. "I want to make it clear that we are not planning to issue" deficit bonds, he said.

In his first speech after winning an Upper House election last Sunday, Prime Minister Shinzo Abe outlined plans for a "bold" stimulus package. He said it will include funds for regional infrastructure, such as bringing forward the construction of maglev and other high-speed train lines and improving facilities at ports for tourist cruise ships.