As might be inferred from this decision, there were some Seminoles whose loyalty to their race could not be counted on. A chief, Charley A. Mathla, who had been one of the delegates to visit Arkansas, was one of these. As he was known to be on good terms with the white people, Osceola ordered that he should be closely watched. He soon learned that there was only too much ground for his suspicion. Charley was getting ready to leave; he had driven his cattle to Tampa and sold them to the white people. If he were allowed to go unpunished other wavering ones would soon follow his example. Osceola wished his warriors to know from the start that punishment for disobedience to him would be more swift and terrible than anything they need fear for disobeying the white man.
With a few faithful followers he hastened through the wilderness towards the village of Charley A. Mathla. There scouts brought him word that Chief Charley was on his way home from Tampa. The war party hid among the trees where the trail to the village passed through a hammock. They had not waited long before the chief came swiftly along the path. Osceola rose and fired. His comrades followed his example. Charley A. Mathla fell forward on the path without a word, dead.
One of the party seized a handkerchief that the dead chief grasped in his hand and showed Osceola that it was full of money. Osceola took the offered treasure and cast the glittering coins far from him. The Indians watched them disappear among the green leaves with surprise and regret. But their leader said, "Do not touch his gold; it was bought with the red man's blood."
In a short time news of the murder of Charley A. Mathla reached Fort King. With it came a rumor that the Indians were holding councils of war in the villages of the Big Swamp. But it was impossible for the agent to get definite information, as the woods were full of hostile Indian scouts. The runners who were on friendly terms with the men at the fort feared to venture beyond the protection of its guns lest they should suffer the fate of Charley A. Mathla.
After the shooting, Osceola and his followers repaired to the fastnesses of Wahoo Swamp, where for some time Indians had been assembling from exposed villages. Here were collected vast stores of ammunition and food supplies, herds of cattle, women and children and old men, both red and black, and many warriors of the two races.