NEW YORK (AP) — Autonomy, the British business software company now owned by Hewlett-Packard Co., is facing a Justice Department investigation over improper accounting under previous management, according to HP.

In a filing with the Securities and Exchange Commission late Thursday, HP said Justice officials had informed the company on Nov. 21 that they were opening an investigation into the allegations, which HP said in November that it had uncovered after a senior Autonomy executive came forward.