Michael Dunn

Marissa Alexander had been sentenced to 20 years in prison for firing what she said was a warning shot at her husband and his two children in 2010. Under the plea deal, she will serve 65 more days.

Dunn was convicted earlier this month in a second trial for the fatal shooting of black teenager Jordan Davis in 2012.

The case, which ended in a mistrial earlier this year, drew national attention because of its racial overtones. Dunn, a white man, said he shot a black teen because he felt threatened.