A 31-year-old man has been charged in the August death of a jogger who was found naked and partly burned in a wooded area near her mother’s house in rural Massachusetts, the authorities said Saturday.

The police tracked down Angelo Colon-Ortiz after investigators spent months following two strong but incomplete leads. People reported seeing a dark-colored sport utility vehicle near where the jogger, Vanessa Marcotte, 27, died. Witness accounts and DNA retrieved from her hands suggested the killer might be a Hispanic man about 30 years old.

Those clues came together last week when a state trooper in Worcester spotted a man matching that description driving the same kind of vehicle. The trooper traced the license plate to Mr. Colon-Ortiz and met him at his apartment, and he voluntarily provided a DNA sample, the authorities said.

Image Vanessa Marcotte Credit... Worcester County District Attorney's Office, via Associated Press

The DNA samples came back as a match on Friday afternoon, Joseph D. Early Jr., the Worcester County district attorney, said at a news conference on Saturday.