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FORT SMITH, Ark. (AP) - A man has been arrested on a murder charge after his pregnant wife who had been stabbed in the chest staggered into a police station in western Arkansas and collapsed.

Fort Smith police spokesman Sgt. Daniel Grubbs says authorities rushed 32-year-old Celestia Duffin to a hospital where doctors delivered her baby prematurely, but both mother and infant died Tuesday.

Grubbs says Duffin had apparently run to the police station from a nearby traffic accident. Police found James Herring at the accident scene. The couple had been married for less than a week.

Herring was arrested on suspicion of first-degree murder and attempted murder. Formal charges could be filed as early as Wednesday. He is being held without bond and has no attorney listed in jail records.

(Copyright 2012 The Associated Press. All rights reserved.)