04:04 PM EDT, 03/13/2024 (MT Newswires) -- (Updates with comment from UnitedHealth Group ( UNH ))

UnitedHealth Group ( UNH ) is under investigation from the US Department of Health & Human Services following a cyberattack on the company's Change Healthcare unit in late February, according to a statement Wednesday from the agency's Office for Civil Rights.

The OCR will probe whether the attack led to a breach of protected health information and whether the entities were in compliance with the Health Insurance Portability and Accountability Act which governs patients' private data.

"OCR's interest in other entities that have partnered with Change Healthcare and UHG is secondary," the OCR said in a statement.

"We will cooperate with the Office of Civil Rights (OCR) investigation. Our immediate focus is to restore our systems, protect data and support those whose data may have been impacted. We are working with law enforcement to investigate the extent of impacted data," a spokesperson for UnitedHealth Group ( UNH ) told MT Newswires in response to a request for comment.

The company's stock was little changed in recent Wednesday trading.

Price: 488.69, Change: -0.66, Percent Change: -0.13