Ahold Delhaize USA, the parent company of Hannaford Supermarkets, says it recently detected a cybersecurity issue within its U.S. network.According to a statement from the company, Ahold Delhaize security teams began an investigation with the help of external cybersecurity experts immediately upon detecting the issue and notified law enforcement.

Efforts to investigate the cybersecurity “issue” prompted the grocery giant's parent company to disconnect some systems to protect them.