Panama has revoked registrations for an unspecified number of ships flying its flag over potential links to North Korea and international sanctions violations, the country’s ship registry has announced.

From July 2019 to date, Panama “has canceled ex officio more than 6.5 million gross register tons (GRT) [of ships] over matters related to Iran, North Korea or [vessels] that have been included in the list of international penalties,” the Panama Maritime Authority announced in a statement last week.

The agency did not specify the total number of revoked vessel registrations and did not elaborate on specific reasons for the delistings.