Anthem health insurance members might not be the only ones affected by the company’s recent data breach.

Of the approximate 78.8 million people whose information was accessed by hackers, anywhere from 8.8 to 18.8 million of those affected include non-members, Bloomberg reported on Tuesday. The non-members used their Blue Cross or Blue Shield insurance in states, such as Texas and Florida, where Anthem has partnerships.

Also on Tuesday, The Hill reported that Robert Anderson, executive assistant director of the Criminal, Cyber, Response and Services branch of the FBI, said the agency was close to naming the cyberattacker behind the breach.

Anderson said to reporters: “We’re close already. But we’re not going to say it until we’re absolutely sure.”

Although China has been pointed to as a primary suspect by media and experts, Anderson wouldn’t confirm one way or the other.