LONDON — FIFA acknowledged this week that its computer systems were hacked earlier this year for the second time, and officials from European soccer’s governing body fear they also might have suffered a data breach.

The hack on FIFA, world soccer’s governing body, occurred in March and is not thought to be connected to a cyberattack orchestrated by a group linked to Russia’s intelligence agency in 2017. That incident led to the publication of a list of failed drug tests by soccer players.

The information that was compromised in the second cyberattack on FIFA is not yet clear, but a consortium of European media organizations plans to publish a series of stories based in part on the internal documents as early as Friday. The group Football Leaks originally obtained the documents.

UEFA officials were targeted in a so-called phishing operation in which third parties fool their targets into giving up password-protected login details, though the organization has been unable to find traces of a hack in its computer systems.