Manila, July 2 -- The Philippine Coast Guard (PCG) is investigating the sinking of Landing Craft Tank (LCT) San Juan Bautista in waters between Romblon and Sibuyan Island on Monday.

In a situation report on Wednesday, PCG District Southern Tagalog (CGDSTL) said six Filipino crew members of the ship were rescued by the fishing vessel Skip Jack Cri 03 and were found in good physical condition.

LCT San Juan Bautista's master confirmed that it departed Guihulngan Port in Negros Oriental on June 28 and was bound for drydocking in Navotas City.

The vessel was carrying 2,500 liters of marine diesel oil and no cargo when it sank.

"Based on the PCG's initial assessment, the risk of environmental damage in Southern Tagalog is low since the fuel...