Before this, the state reported no positive COVID-19 case for six days straight.
Chief Minister Trivendra Singh Rawat has asked everyone to stay vigil and urged them to cover their face wherever they go.
"We need to stay very vigil. Kindly cover your face wherever you go. It's not necessary to wear a mask. You can tie a handkerchief around your mouth. You should also wash it with warm water or iron after using it," he said.
India's count of positive COVID-19 cases has risen to 10,815, the Union Ministry of Health and Family Welfare said on Tuesday.
( With inputs from ANI )