The U.S. Justice Department and four states sued Tuesday to block UnitedHealth Group’s proposed $3.3 billion acquisition of Amedisys, a Louisiana-based home health company that would further United’s push into the home care and hospice markets.

The Justice Department is suing to block UnitedHealth Group's $3.3 billion purchase of Amedisys, citing concerns the combination would hinder access to home health and hospice services in the U.S. The antitrust complaint was filed in Maryland federal court Tuesday.

The Justice Department on Tuesday sued to block UnitedHealth Group’s $3.3 billion acquisition of Amedisys, alleging the deal would give the health-industry giant too much power over the market for home health and hospice services.

The U.S. Justice Department is moving to block UnitedHealth Group's $3.3 billion purchase of Amedisys Inc. over concerns the deal would harm competition in the market for home health services, Bloomberg News reported on Tuesday,