GRAND MARAIS — Northeastern Minnesota authorities are warning residents about wolves attacking dogs and approaching people in Cook County.

Sheriff Leif Lunde said Thursday there have been several recent incidents involving wolves on the north side of Grand Marais. He’s asking county residents not to let their pets run loose. He didn’t provide details about the attacks or say whether injuries have been reported.

Lunde asked people who encounter an animal they believe to be dangerous to contact the Cook County Sheriff’s Office.