KOSOVO (WHBL) - The Army is investigating the death of a soldier from Wisconsin. Her family said 33-year-old Sergeant Heidi Ruh, of rural Kiel, was shot and killed Friday at a base in Kosovo, where she was stationed. Relatives were not told what happened. The Pentagon had not announced the death as of Tuesday morning. Ruh's father Scott says that his daughter was an 11-year Army veteran, and she repaired surgical machines in a medical unit. Scott Ruh said Heidi began her Kosovo assignment in February. She spent eight years at Fort Hood, Texas, including during the 2009 massacre in which another Kiel resident - Amy Krueger - was killed. Ruh and Krueger were a year apart in their class groups at Kiel High School. Ruh's family plans a public memorial service once her body is returned to Wisconsin.