PORTLAND, Maine (AP) — Maine’s governor said Tuesday she is quarantining after exposure to someone who is believed to have COVID-19.

Gov. Janet Mills, a Democrat, said she’s quarantining in the Blaine House, the residence of the Maine governor, until Dec. 12. She said she is not experiencing symptoms, but is believed to have been exposed to COVID-19 by a member of her executive protection unit.

Executive protection unit members are with the governor at all times and follow strict safety protocols about the coronavirus, Mills’ office said. The member developed symptoms that resembled COVID-19 on Monday and is awaiting the results of a test, the governor’s office said.

“I am going to continue working as hard as I can on behalf of Maine people during this quarantine; but putting a lid on this virus will also require hard work by every person all across the state,” Mills said.

Mills is scheduled to take a coronavirus test on Thursday. The governor’s office did not release the name of the executive protection unit member. The governor and the unit member were in a car together with face coverings on for less than 10 minutes, the office said.

Mills had been scheduled to swear in the Maine Legislature on Wednesday. Andrew Mead, the acting chief justice of the Maine Supreme Judicial Court, will do it in her absence. Mills said she plans to continue fulfilling her obligations as governor and stay in touch with her cabinet members and staff virtually while in quarantine.