Free after 20yrs for a crime she didn't commit

Tyra Patterson was freed early on Christmas Day from Cleveland's Northeast Pre-release Center after 22 years in prison. Photo / Daily Mail.

An Ohio woman who spent 22 years in prison after she was jailed for being an accomplice to a teen's murder has finally been released after celebrities joined her campaign for freedom, reports the Daily Mail.

Tyra Patterson, now 42, was freed early on Christmas Day from Cleveland's Northeast Pre-Release Centre.

Patterson, who has always maintained her innocence, was convicted in the 1994 murder and robbery of 15-year-old Michelle Lai.

Patterson did not fire the shot that killed Lai, but under Ohio law accomplices can be handed the same punishment as killers. Photo / Daily mail.

She did not fire the shot that killed Lai, but under Ohio law accomplices can be handed the same punishment as killers.

Patterson has always maintained that Dayton police forced her into confessing to a robbery she says she never committed, which then opened her up to an aggravated murder conviction.

A number of celebrity supporters recorded videos last year in support of her innocence claims, including documentary filmmaker Ken Burns, actress Alfre Woodard and Mad Men TV show creator Matthew Weiner.

Patterson was initially denied parole in 2011, but was granted release in October after the wave of support.

Once she had been released, Patterson ran down a snow-covered street in Kettering to greet family members for Christmas.

Patterson did not fire the shot that killed Lai, but under Ohio law accomplices can be handed the same punishment as killers. Photo / Daily mail.

"Let's eat and open gifts!" she said after hugging her mother.

The murder victim's sister, Holly Lai, was among those to advocate for Patterson's release saying she wasn't involved in the shooting or robbery.

Lai, and a group of teen girls including her sister Holly, were burgling garages on the night of September 20, 1994.

They had been sitting in a Chevy Chevette in an alley when they were confronted by a group that included Patterson.

The two groups got into a heated shouting match that resulted in Lai being shot in the head. Another girl, LaShawna Keeney, pleaded guilty to firing the fatal shot and is serving a life sentence in the same jail Patterson was in.