South Korea’s biggest online retailer, Coupang apologised on Sunday over the breach of personal information from 33.7 million customer accounts through unauthorized data access.

“We sincerely apologise once again for causing our customers inconvenience,” Park Dae-jun, CEO of the firm dubbed the Amazon.com

of South Korea, posted on its website.

The incident is the latest in a series of data leaks at major South Korean companies, including SK Telecom.

The government, which held an emergency meeting on Sunday, is looking into whether Coupang violated safety rules regarding personal information protection, said Minister of Science and ICT Bae Kyung-hoon.