After being hit as part of a global cyber attack called Petya on June 27, Maersk is now reporting that “we have contained the issue.”

Still, the group, which includes the world’s largest ocean container carrier, as well as terminal operations and energy units, has IT systems down “across multiple sites and select business units.”

The company added that it is “working on a technical recovery plan with key IT-partners and global cyber security agencies.”

In order to contain the attack Maersk has shut down a number of systems and has taken “precautionary measures” to ensure continued operations. At this time, Maersk Oil, Maersk Drilling, Maersk Supply Services, Maersk Tankers, Maersk Training, Svitzer, and MCI are not operationally affected, the company said.

“Maersk Line vessels are maneuverable, able to communicate and crews are safe,” the company said. “APM Terminals is impacted in a number of ports,” including, reportedly, in Los Angeles. Damco has limited access to systems.

“We continue to assess and manage the situation to minimize the impact on our operations, customers, and partners from the current situation,” the company said, on its website. “Business continuity plans are being implemented and prioritized.”

An assessment is ongoing to determine the impact on Maersk business.