South Korea's daily COVID-19 cases fell back to the 300 range again on Tuesday amid concerns about mass infections at a missionary school in the central city of Daejeon. 

The Korea Disease Control and Prevention Agency(KDCA) said on Tuesday that 354 new cases were reported throughout the previous day to raise the country's accumulated caseload to 75-thousand-875. 

Of the new cases, 338 were local transmissions, while 16 were imported.

By region, less than 200 domestic cases came from the capital area as Seoul added 101 infections, Gyeonggi Province 79 and Incheon 16. 

Gangwon Province recorded 42 new local cases, including 39 cases linked to IEM School in Daejeon. The unaccredited boarding school run by a Christian missionary group reported 127 other cases on Sunday. 

Eleven more deaths have been reported, bringing the death toll to one-thousand-371. The fatality rate stands at one-point-81 percent. 

The number of critically ill patients decreased by five to 270.