MILWAUKEE — A spokesperson for the Milwaukee County Sheriff’s Office (MCSO) confirmed human remains were discovered along a beach’s Lake Michigan shoreline in Waukegan, Ill.

MCSO said the human remains — an arm — have not been identified. Testing must be done and results returned before officials can confirm who the remains belonged to.

MCSO said it has been in touch with its counterparts in Waukegan.

This story is developing. Check back for updates.