After the assassination incident, the Portuguese government reacted swiftly. After successfully arresting the assassin, the Portuguese government released the information that the assassin might be from Australasia, trying to confuse the Portuguese citizens and incite hatred towards Australasia again.
Ambassador Herbert Simon, who was attending talks in London at the time, also received news from his country. After receiving instructions, he suddenly halted the talks and expressed his suspicions to Chief David.
The incident happened at a very coincidental time - King Carlos I of Portugal was assassinated just when the negotiations between Portugal and Australasia fell into a stalemate.
From this perspective, Australasia seemed to be suspicious, and many Portuguese citizens were indeed deceived. They took to the streets to express their dissatisfaction with Australasia and rejoined the ranks supporting the government in going to war.