As the number of companies looking to sue bankrupt OW Bunker continues to grow two South Korean oil companies are reported to be considering legal action.

South Korean oil refiners SK Energy and GS Caltex are both reported to be looking into legal action against OW Bunker, which filed for bankruptcy on Friday.

“We are considering all possible legal actions...We don’t have exact schedules over legal actions, though,” a spokeswoman at SK Innovation Co Ltd, which fully owns South Korea’s largest refiner SK Energy, told Reuters.

A spokesman for GS Caltex, a Korean joint venture, was also reported as saying they were considering legal action.

Neither company revealed its losses to the Danish bunker supplier.