South Korea's exports are expected to have fallen for the first time in 16 months on U.S. tariff uncertainty and a slower tech sector, a Reuters poll showed, underscoring risks for trade-reliant economies from the Trump administration's policies.

Shares of Air Busan dropped on Friday, after a plane belonging to the budget carrier caught fire earlier this week.

South Korean officials are launching an investigation into the cause of the fire that engulfed an Air Busan passenger plane, with eyewitness accounts suggesting a power bank may have sparked the blaze.

An investigation into a fire that engulfed an Air Busan plane at a South Korean airport this week is being slowed by a large amount of fuel and oxygen still on board, an air crash investigation official told Reuters.