Shoppers looking to pick up grocery items at Stop & Shop supermarkets were recently met with bare shelves after the popular grocery chain announced that a “cybersecurity issue” impacted its trucking shipments.

Stop & Shop’s parent company, Ahold Delhaize, said in a statement on its website, “Delhaize USA recently detected a cybersecurity issue within its U.S. network. Immediately upon detecting the issue, our security teams began an investigation with the assistance of external cybersecurity experts. We also notified law enforcement.”

The grocery chain announced that some of their online pick-up and delivery services were canceled this week. Stop & Shop pharmacies were also impacted, according to the company.

“There were signs saying ‘we apologize for any inconvenience’ near empty shelves,” said Stop & Shop customer Cameron Francoeur at the Forestville Stop & Shop. “The meat section was really empty. It didn’t affect me as a shopper, but I noticed it was pretty barren. There was no hamburger meat and other kinds of meat items.”

Other shoppers said that they weren’t able to get all the groceries on their list because of empty store shelves.

“I needed a couple different vegetables for a dish I’m making but wasn’t able to get everything on my list,” said Stop & Shop customer Alex Thomas of Bristol. “So I will have to go to another store to get those ingredients. The produce section had a lot of holes.”

In a statement released early on Tuesday, the company said they are working to address the issue.

“Our teams are taking steps to assess and mitigate the issue. This includes taking some systems offline to help protect them. This issue and subsequent mitigating actions have affected certain Ahold Delhaize USA brands and services including a number of pharmacies and certain e-commerce operations,” the company said in a statement.

Stop & Shop is Connecticut’s largest grocery chain. After five locations closed last month, there are 81 stores in the state and 350 total throughout New York, New Jersey, Connecticut, Rhode Island and Massachusetts.

“Customers may see more limited inventory than usual for certain products. Stop & Shop is committed to serving our customers, and we are taking steps to ensure our stores are stocked for our shoppers in the coming days,” the company said in a statement. “We will continue to take actions to further protect our systems. The security of our customers, associates and partners is a top priority. We apologize for any inconvenience this issue may have caused customers and partners.”

The Courant reached out to Stop & Shop’s corporate office for further comment but did not hear back in time for this story to be published.