An autopsy of the two bodies found last week in a remote area of north Manitoba has confirmed that they were the fugitives Bryer Schmegelsky and Kam McLeod, and that the teenagers had died from “suicides from gunfire,” the Canadian police said on Monday.

“While both individuals were deceased for a number of days before they were found, the exact time and date of their deaths are not known,” said the Royal Canadian Mounted Police in a statement. “However, there are strong indications that they had been alive for a few days since last seen in July.”

Mr. McLeod, 19, and Mr. Schmegelsky, 18, had been the subject of an intense two-week manhunt across northern Canada. They left their home in Port Alberni, British Columbia, a lumber- and paper-mill town, on July 12, telling relatives and friends they planned to look for work in Alberta.

The police initially thought they were missing, but then they became suspects in the killings of Leonard Dyck, a 64-year-old University of British Columbia botanist; Lucas Fowler, 23, an Australian; and his girlfriend, Chynna Deese, 24, of Charlotte, N.C.