They said 173 people have recovered from COVID-19 and have been discharged from hospital.
Tripura Chief Minister Biplab Kumar Deb urged people of the state to follow government instructions and cooperate with authorities as the number of COVID-19 cases are rising.
He said all the 102 people who tested positive for COVID-19 have a travel history.
"Alert. 102 people found COVID-19 positive today in Tripura out of 578 samples tested. All of them have travel history. As the numbers are rising, I urge everyone to stay extra conscious, follow the Govt instructions and co-operate with us. #TripuraCOVID19Count", Deb tweeted late on Monday night.
Officials said 18,858 out of 31,872 persons have completed their 14-day quarantine period and the rest 13,014 are still under surveillance.
Of the 13,014 people, 441 are in institutional quarantine and the rest in home quarantine, they added. JOY RG DV DV