"He had entered the state prison system in January 2018 with a 10-year sentence. But CDCR officials said prior to reaching a CDCR facility, Martin had already received 508 days of pre-sentencing credits, and received a variety of additional post-sentencing credits and hence was let go early this year, having served his sentence."
https://www.yahoo.com/news/sacramento-shooting-suspect-got-prison-210740581.html?source=patrick.net