The kingdoms of the East Blue had begun gathering troops on a massive scale, naturally drawing the World Government's attention.
At first, the World Government ordered Roy to thoroughly investigate the matter.
But since Roy was already preparing to rebel, he naturally delayed carrying out the order again and again.
Thus, Roy was quickly added to the World Government's list of suspects. Or rather, he had already fallen under the World Government's suspicion when he had been aggressively building his reputation.
As for why the World Government had not removed Roy from office immediately—
The war in the North Blue had tied up more than half of the World Government's forces. On top of that, Roy's family had served the World Government for centuries, while his allies within the World Government had worked tirelessly to protect him.
So although Roy had been placed on the World Government's priority watch list, they had still been unable to spare the manpower to investigate him thoroughly.
However, as Roy's preparations in the East Blue became increasingly complete, more and more information was exposed.
According to intelligence from the World Government, its higher-ups had become extremely dissatisfied with the developments in the East Blue.
Roy's allies within the World Government had already done everything they could.
According to the intelligence Carlos had recently sent over—
Roy knew that the World Government's higher-ups were preparing to send some members of the Knights of God to the East Blue to question and investigate him.
At the same time, the Celestial Dragons were preparing to station a large number of forces in the East Blue. While plundering the East Blue's wealth on a massive scale, they also intended to speed up construction of Terrachilf, the "Kingdom on the Bridge."
One cigarette after another burned down to ash.