FORT KENT, Maine (AP) — Maine health officials have asked a court to limit the movements of nurse Kaci Hickox, who defied a voluntary quarantine for medical workers who have treated Ebola patients.

Officials filed documents Thursday, following through with a threat to try to isolate her.

A judge has issued a temporary order until a ruling expected today. For now, police are monitoring Hickox and her public interactions but cannot detain her.

The quarantine attempt is shaping up as the nation’s biggest test case yet in the struggle to balance public health and fear of Ebola against personal freedom.

Hickox, who treated Ebola patients in Sierra Leone, says confinement violates her rights. She says that she has no symptoms and poses no risk to the public.