WASHINGTON (AP) -- Nearly all active-duty military, Guard and Reserve members -- about 2.2 million total -- may be at risk for identity theft because their personal information was among the data stolen from a Veterans Affairs employee last month.

In a new disclosure Tuesday, VA Secretary Jim Nicholson said the agency was mistaken when it said over the weekend that up to 50,000 Navy and National Guard personnel were among the 26.5 million veterans whose names, birthdates and Social Security numbers were stolen on May 3.

The number is actually much higher.

The VA realized it had records on file for almost all active-duty personnel because they are eligible to receive VA benefits such as GI Bill educational assistance and the home loan guarantee program.

In a statement, Nicholson said the VA's latest review found the data included as many as 1.1 million active-duty personnel from all the armed forces, along with 430,000 members of the National Guard, and 645,000 members of the Reserves.

He noted that the agency has been notifying all affected veterans and that there have been no reports of identity theft in what has become one of the nation's largest security breaches.

"VA remains committed to providing updates on this incident as new information is learned," Nicholson said, explaining that it discovered the larger numbers after the VA and Pentagon compared their electronic files more closely.