Susan Mellen, who spent 17 years in prison after being convicted of murder in the death of a homeless man, was exonerated on October 10 by a Los Angeles County judge who said she should not spend another minute behind bars.

The courtroom burst into applause after Superior Court Judge Mark Arnold overturned the conviction of Susan Mellen, who was to be processed for release from the suburban Torrance courthouse.

Susan Mellen had entered the courtroom in tears, and her children also wept.

The judge said that in her case the justice system failed and she had inadequate representation by her attorney at trial.

Susan Mellen’s case was investigated by Deidre O’Connor, head of a project known as Innocence Matters that seeks to free people who are wrongly convicted.

Deidre O’Connor said in an earlier interview that she found that Susan Mellen was convicted of the 1997 killing of Richard Daly based solely on the testimony of a notorious liar.

Susan Mellen’s case was investigated by Deidre O’Connor, head of a project known as Innocence Matters that seeks to free people who are wrongly convicted (photo AP)

Susan Mellen, a mother of three, was sentenced to life in prison without possibility of parole.

The witness who claimed she heard Susan Mellen confess was June Patti, who had a long history of giving false tips to law enforcement, according to documents in the case. June Patti died in 2006.

Three gang members subsequently were linked to the crime, and one was convicted of the killing. Another took a polygraph test and said he was present at the bludgeon killing of Richard Daly, and Susan Mellen was not there.

In a habeas corpus petition, Deidre O’Connor said the police detective who arrested Susan Mellen was also responsible for a case in 1994 that resulted in the convictions of two men ultimately exonerated by innocence projects.

It said the primary evidence against Reggie Cole and Obie Anthony was the false testimony of an informant who avoided prosecution for other charges in exchange for his help.

Susan Mellen’s youngest children were 7 and 9 when she was arrested.

One of the daughters was honored by Innocence Matters for bravery in obtaining a confession that helped to prove her mother’s innocence, Deidre O’Connor said.

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