DNA tests free 100 in US

Genetic testing has now led to the release of 100 people in the United States.

The release of Larry Mayes in Indiana last month comes as a timely victory for a nationwide coalition of advocates seeking to free those wrongfully convicted.

The advocates plan to gather this weekend to call for reform of the criminal justice system.

Mayes, aged 52, spent 21 years in prison for a rape of a gas station cashier that he steadfastly maintained he never committed.

He was released from Indiana State Prison on December 21 after DNA tests of old crime scene evidence was compared to his own genetic tests.