US Department of Justice investigators are looking into allegations of accounting fraud at Autonomy, a British software company with offices in the Boston area that Hewlett-Packard Co. bought last year for $11.1 billion.

HP officials have accused former Autonomy executives of misrepresenting the company's finances and inflating its revenue figures prior to the acquisition. Last month, HP took an $8.8 billion charge because it said Autonomy wasn’t worth the original price tag.