What does Irving intend for his reader to assume happened to Ichabod Crane? What evidence or implications does he provide in the text of the story to support this conclusion?

Irving intends for his reader to assume Ichabod ran away from Sleepy Hollow.

It is true, an old farmer, who had been down to New York on a visit several years after, and from whom this account of the ghostly adventure was received, brought home the intelligence that Ichabod Crane was still alive; that he had left the neighborhood partly through fear of the goblin and Hans Van Ripper, and partly in mortification at having been suddenly dismissed by the heiress; that he had changed his quarters to a distant part of the country; had kept school and studied law at the same time; had been admitted to the bar; turned politician; electioneered; written for the newspapers; and finally had been made a justice of the Ten Pound Court. Brom Bones, too, who, shortly after his rival’s disappearance conducted the blooming Katrina in triumph to the altar, was observed to look exceedingly knowing whenever the story of Ichabod was related, and always burst into a hearty laugh at the mention of the pumpkin; which led some to suspect that he knew more about the matter than he chose to tell.