Thursday's release of Chatman, 47, added to Dallas County's nationally unmatched number of wrongfully convicted inmates.

'Every time I'd go to parole, they'd want a description of the crime or my version of the crime,' Chatman said.

'I don't have a version of the crime. I never committed the crime. I never will admit to doing this crime that I know I didn't do.'

District Judge John Creuzot, whom defense lawyers credited with shepherding Chatman's case for exoneration through the legal system, recommended that Texas' Court of Criminal Appeals find Chatman not guilty.

With several relatives dabbing at their eyes with tissues and cheering, Chatman was released.

'I really can't tell you how I feel,' said his aunt, Ms Ethel Bradley. 'But I can tell you it is a different feeling than I have had in a long time, just to be holding his own hand.'

Before the crime is officially cleared from Chatman's record, the appeals court must accept the recommendation or the governor must grant a pardon. Either step is considered a formality after Creuzot's ruling.

Chatman became the 15th inmate from Dallas County since 2001 to be freed by DNA testing. He served more time than any of the other inmates, four of whom were in court on Thursday to show their support.

Dallas has freed more inmates after DNA testing than any other county nationwide, said Ms Natalie Roetzel of the Innocence Project of Texas. Texas leads America in prisoners freed by DNA testing, releasing at least 30 wrongfully convicted inmates since 2001, according to the Innocence Project.

One of the biggest reasons for the large number of exonerations is the crime lab used by Dallas County, which accounts for about half the state's DNA cases. Unlike many jurisdictions, the lab used by police and prosecutors retains biological evidence, meaning DNA testing is a viable option for decades-old crimes.

District Attorney Craig Watkins also attributes the exonerations to a past culture of overly aggressive prosecutors seeking convictions at any cost. Mr Watkins has started a program in which law students, supervised by the Innocence Project of Texas, are reviewing about 450 cases in which convicts have requested DNA testing to prove their innocence.

'It is time we stop kidding ourselves in believing that what happened in Dallas is somehow unique,' said Mr Jeff Blackburn, the founder of the Innocence Project of Texas.

'What happened in Dallas is common. This is Texas.' -- AP