The data breach suffered by convenience store chain giant 7-Eleven in mid-April likely impacts just over 185,000, breach notification website HaveIBeenPwned reports.

The incident, 7-Eleven said in a data breach notice filed with the Maine Attorney General’s Office earlier this month, occurred on April 8 and involved systems containing franchise documents.

7-Eleven said that personal information such as names and addresses was likely stolen in the attack, but did not disclose the number of potentially affected individuals.

In mid-April, the infamous extortion group ShinyHunters listed 7-Eleven on its leak website, claiming to have stolen 600,000 Salesforce records, and demanding a ransom to be paid by April 21. The group later offered the data for sale on a Russian hacking forum.

The allegedly stolen data has since been published online and added to HaveIBeenPwned, which parsed the dataset and analyzed it.