A woman who says she was a 16-year-old sex-trafficking victim when she killed a man in 2004 was granted clemency Monday by Tennessee's governor and will be released from prison.

Gov. Bill Haslam granted clemency Monday to Cyntoia Brown, who had been serving a life sentence. She will be released on parole Aug. 7.

"Cyntoia Brown committed, by her own admission, a horrific crime at the age of 16. Yet, imposing a life sentence on a juvenile that would require her to serve at least 51 years before even being eligible for parole consideration is too harsh, especially in light of the extraordinary steps Ms. Brown has taken to rebuild her life," Haslam said in his statement.

Brown, now aged 30, will remain on parole supervision for 10 years on the condition she does not violate any state or federal laws, holds a job, and participates in regular counselling sessions.

Brown was sentenced to life in prison and was to serve at least 51 years before she could be eligible for parole. (Lacy Atkins/The Tennessean/Associated Press)

Brown's case has attracted national attention from criminal justice reform advocates, and attention has amped up as Haslam's second and final term entered its final weeks.

Celebrities like Kim Kardashian West and singer Rihanna threw their support behind the fight for her release. The governor's office was inundated with thousands of phone calls and emails from supporters.

"Thank you Governor Haslam," West tweeted soon after news of the clemency decision broke.

Lacked mental capacity

Brown was convicted in 2006 of murdering 43-year-old Nashville real estate agent Johnny Allen two years before. Police said she shot Allen in the back of the head at close range with a loaded gun she brought to rob him after he picked her up at a drive-in theatre in Nashville to have sex with her.

However, according to her lawyers, Brown was a victim of sex trafficking who not only feared for her life but also lacked the mental state to be culpable in the slaying because she was impaired by her mother's alcohol use while she was in the womb.

Tennessee Gov. Bill Haslam granted executive clemency to Brown, who will be released on parole in August. (Lacy Atkins/The Tennessean via Associated Press)

Brown expressed thanks in a statement released Monday by her legal team.

"I am thankful for all the support, prayers, and encouragement I have received. We truly serve a God of second chances and new beginnings. The Lord has held my hand this whole time and I would have never made it without him," Brown said. "Let today be a testament to his saving grace."

Supreme Court ruling

The U.S. Supreme Court has ruled against life-without-parole sentences for juveniles. However, the state of Tennessee argued successfully in lower courts that it was not in violation of federal law, because Brown did have a possibility for parole: She was sentenced to serve at least 51 years of her life sentence.

During her time in prison, Brown completed her GED and took college classes. She is currently one course away from finishing a Bachelor's degree at Lipscomb University.

Nashville Mayor David Briley praised Haslam's decision, calling it a "great day for social justice and our city." Democratic state Sen. Raumesh Akbari said the clemency announcement shows that Tennessee "can show love, compassion and mercy" for people who have experienced trauma.

To date, Haslam has granted five commutations, 15 pardons and one exoneration. The Republican says he is continuing to review and consider additional clemency requests.