The American International Group Inc. says personal data on 930,000 individuals was taken when a burglar stole computer equipment from one of its offices in the Midwest.

The data included personal information on employees of companies that were seeking quotes for excess health insurance, says Chris Winans, a spokesman for AIG, New York.

Winans declined to identify which office had been burglarized, noting AIG does not want the thief to know what he has.

“We feel that there’s no indication the thieves are seeking data rather than valuable hardware, so why wave our arms around about the data?” Winans says.

The information includes the names, Social Security numbers and perhaps some medical information on the individuals.

The information, which must be accessed by password, was stolen March 31. It had been submitted by 690 insurance brokers around the country seeking health insurance for employers.

AIG plans to open a phone center to answer questions from the individuals whose personal information has been taken, Winans says. The company is preparing to notify the individuals by letter, he added.

“We spent hundreds of thousands of dollars figuring out whose information was on there,” he said of the stolen equipment, which included a computer server.

In addition to notifying law enforcement and beginning an internal investigation of the theft, “all required regulatory notifications are being made,” Winans said.