WINDOW ROCK, Ariz. (AP) – An investigation into whether the leader of the country’s largest American Indian reservation and others broke any laws in connection with two companies that operated on the Navajo Nation is moving forward.

Tribal Department of Justice attorney Henry Howe told lawmakers last week that Attorney General Louis Denetsosie soon will file a petition with the Window Rock District Court to appoint a special prosecutor.

The lawmakers placed Navajo President Joe Shirley Jr. on administrative leave last month. The move came a week after they met in closed session to discuss alleged legal violations arising from tribal contracts with separate Internet and manufacturing companies.

Investigators hired by the council compiled the reports, but they haven’t been made public.