NEW YORK, Oct 14 (Reuters) - Assa Abloy AB said on Friday that it is working to sell its Emtek and smart residential business in the United States to resolve U.S. anti-trust issues that are holding up a planned acquisition.

The U.S. Justice Department last month filed a lawsuit to challenge a planned $4.3 billion deal where Assa Abloy would acquire the Hardware and Home Improvement division from Spectrum Brands Holdings Inc. (Reporting by Svea Herbst-Bayliss Editing by Chris Reese)