A Texas grocery store employee who spent nearly 25 years in prison in his wife's beating death walked free Tuesday after DNA tests showed another man was responsible. His attorneys say prosecutors and investigators kept evidence from the defense that would have helped acquit him at trial.

Michael Morton, 57, was convicted on circumstantial evidence and sentenced to life in prison for the August 1986 killing of his wife, Christine. Morton said he left her and the couple's 3-year-old son to head