Finally I found the answer
During the American Revolution, American society was divided between two groups. One group wanted to revolt against the British and become independent. Another group, known as loyalists, wanted to remain under the control of Great Britain.
With this in mind, it is easy to understand the fact that a loyalist would try to sabotage any efforts by the American colonists to break free from Great Britain. Along with this, loyalists would share inside information with the British military so that they would be aware of the rebels plans.
