South Korea's business sentiment worsened in June amid high oil prices, snapping its four-month rise. 

According to the Bank of Korea on Thursday, the Business Survey Index(BSI) for all industries stood at 95-point-one in July, down zero-point-six points from the previous month. It marks the first fall after rising four straight months since February. 

 A reading below 100 means pessimists outnumber optimists.

The BSI for manufacturers also dropped one-point-seven points month-on-month to reach 95-point-seven in July. 

The index for non-manufacturing industries, which includes restaurants, wholesalers and retail businesses, reached 94-point-six, up zero-point-three points from a month ago, growing for the fifth consecutive month. 

Meanwhile, the BSI outlook for August stood at 93-point-four, up one-point-three points from the previous month.