BISMARCK — North Dakota Lt. Gov. Brent Sanford is in quarantine after his wife, Sandi, tested positive for COVID-19 earlier this week.

Sanford announced his wife's diagnosis on Twitter, saying she received a positive test result on Thursday, Jan. 7, and currently has no symptoms of the illness. The former Watford City, N.D., mayor said he is awaiting a test result and will quarantine with his family at home. He's expected to return to the Capitol around the end of the month, said spokesman Mike Nowatzki.

"Thanks to our health care workers & (the North Dakota Department of Health) contact tracers, and to family and friends for the well-wishes," Sanford said in a tweet.

The lieutenant governor attended sessions in both the state House and Senate on Tuesday, but Nowatzki said he was wearing a mask and social distancing in the chambers. No one in the governor's office, including Gov. Doug Burgum, is considered Sanford's close contact, Nowatzki added.

The governor's office would inform lawmakers and the public if Brent Sanford tests positive, Nowatzki said.