South Korea sees 103 new COVID-19 cases on Friday.
Excluding the high number of cases from a chartered flight from Iraq three weeks ago, this marks the highest number of cases in a single day since late March.
Many of the cases came from cluster infections in churches, marketplaces, and schools.
These new cases have forced the country's health authorities to consider raising the social distancing level to Level 2.
"We have discussed the possible option of raising social distancing during an emergency meeting held by the Prime Minister. However, the requirement for Level 2 has not been fully met yet."
Of Friday's new infections, 85 were local, with 72 of these coming from the Seoul metropolitan area.
Due to these growing numbers, some local governments are now under pressure.
To stop the further spread of COVID-19, Gyeonggi-do Province Governor Lee Jae-myung has restricted local religious gatherings for two weeks.
Outside Gyeonggi-do Province, 31 cases were reported in Seoul and 3 in Incheon.
There were 18 imported COVID-19 cases.
The head of the Central Disease Control Headquarters, Jung Eun-kyeong, said Friday that the situation in the capital area is serious and could lead to a massive outbreak.
"The epidemic is spreading so rapidly that the number of confirmed cases has doubled in just one day in Seoul and Gyeonggi-do Province. Thirteen percent of the new cases have no clear origin.
The health authorities add that the risk is even greater because people have become lax in following the quarantine rules.
There were no additional deaths reported on Friday, so the total death toll stands at 3-hundred 5.
Han Seong-woo, Arirang News.