Saionji suspected that the Army had a hand in the incident, and went to the capital from Okitsu, summoned Prime Minister Giichi TANAKA, and advised him that the government must thoroughly investigate this affair, and if the guilty party was Japanese, a harsh punishment should be exacted.
西園寺は陸軍の仕業であることに気づき、興津より上京して首相田中義一を呼びつけ、政府としてこの問題をしっかり調べ、もし犯人が日本人であるならば厳罰に処す必要があることを申し渡している。