By Gaurav Raghuvanshi

SINGAPORE--Genting Singapore PLC (G13.SG) said Wednesday its unit Resorts World at Sentosa Pte. Ltd. will voluntarily pre-pay its entire S$680 million (US$502.5 million) loan outstanding.

The loan, part of the casino resorts operator's S$2.27 billion syndicated senior secured credit facilities, will be repaid from its internal cash resources, the company said in a stock-exchange announcement.

The repayment "will allow the group to improve its capital efficiency," it said, adding that its total borrowings will be reduced to S$253 million from S$933 million currently.

Write to Gaurav Raghuvanshi at gaurav.raghuvanshi@wsj.com