Another soldier has tested positive for the new coronavirus at an Army unit in the northern city of Pocheon, bringing the total cases in the unit's infection cluster to 37, the defense ministry said Tuesday.

The soldier was confirmed to be infected with COVID-19 the previous day while away from the unit for vacation. It was unclear whether he contracted the virus before leaving the unit last week for his last vacation before his discharge from mandatory military duty.

Soldiers on their last vacation are discharged from their military service without returning to bases.

The latest case raised the number of coronavirus infections reported at the Pocheon base to 37 since the first case was reported Sunday.

All service members stationed in the city have been banned from off-base trips following the outbreak.

Authorities are tracing the routes of their infection, but the exact cause has yet to be identified.

"We are putting utmost efforts to confirm the route of the infections, with preventing the virus from spreading to other bases as a priority," deputy ministry spokesperson Col. Moon Hong-sik said during a regular press briefing.

On Monday, Defense Minister Suh Wook convened an emergency meeting involving major military commanders over the virus situation and ordered all units to review whether service members are properly following antivirus guidelines.

The military reported 149 coronavirus cases as of Tuesday. (Yonhap)