MEXICO CITY — The body of a Mexican conservationist devoted to the protection of the monarch butterfly in Mexico was found on Wednesday, two weeks after he went missing, the authorities said.

The conservationist, Homero Gómez González, managed a butterfly sanctuary in the state of Michoacán, a violence-ravaged region that is also the location of mountain forests where the butterflies settle every winter after a long and extraordinary migration from Canada and the United States.

Mr. Gómez’s disappearance was reported on Jan. 14, spurring a robust search involving several government agencies. The circumstances of his disappearance and death remain unclear, though an official with Michoacán’s human rights commission told Reuters in the days after he vanished that he might have run afoul of illegal loggers working in the area.

Criminal groups in Mexico and elsewhere in Latin America have often threatened or attacked environmentalists whose work impedes their interests.