SEOUL, April 30 (Xinhua) -- Samsung Electronics, South Korea's tech giant, saw its operating profit drop by a double-digit in the first quarter, marking the lowest figure in 10 quarters, a regulatory filing showed Tuesday.

Operating profit halved to 6.23 trillion won (5.4 billion U.S. dollars) in the January-March quarter. It was down 60.2 percent from a year earlier, and down 42.3 percent from the previous quarter.

It was the lowest in 10 quarters since the third quarter of 2016 when the profit was 5.2 trillion won (4.5 billion U.S. dollars).

Revenue declined 13.5 percent over the year to 52.39 trillion won (45.1 billion U.S. dollars) in the first quarter. From three months earlier, it went down 11.6 percent.

The ratio of operating profit to revenue, which measures the company's profitability, came in at 11.9 percent in the quarter, less than half of 25.8 percent tallied a year earlier. It was the lowest in 10 quarters.

Net income plunged 56.9 percent from a year earlier to 5.04 trillion won (4.3 billion U.S. dollars) in the first quarter. From the previous quarter, it was down 40.4 percent.