The state issued an apology after thousands of Marylanders received 1099-G forms that did not belong to them, according to a statement by the Office of the Comptroller.

The individuals’ addresses on the envelopes were correct, but the inside tax forms were wrong. A printing error and internal issue caused about 6,000 forms to go to incorrect addresses.

“We sincerely apologize for not catching the error and for any distress this incident may cause the affected individuals,” the Office of the Comptroller said in a statement.

Those who received another person’s information should “destroy the document immediately,” according to the statement.

The agency said it was an internal issue. There was no external data breach and the error did not impact other tax forms, the agency said.

The correct forms will be mailed this week. People can also view the correct information through the General Accounting Division Online Service Center.

“We will be altering our process in the future on printing jobs to ensure this type of incident does not ever happen again,” the Office of the Comptroller said in a statement.

The agency will provide additional instructions regarding credit monitoring services in the coming days, according to the statement. The agency will also establish a dedicated email address, phone line and website for this issue.

People can also email gad@marylandtaxes.gov with the subject line “1099G Issue.”

According to the Office of Comptroller, the 1099-G is a form for reporting income received from your Maryland state taxes as a refund, offset or credit. It’s commonly issued by people who received unemployment insurance benefits, according to the Maryland Department of Labor.