Los Angeles County Sheriff Lee Baca has announced his retirement one month after the arrests of 18 current and former deputies for the alleged abuse of prisoners and other offenses in local jails. Baca has served for nearly 50 years and had planned to seek re-election in June. But he now says he will step down at the end of the month. The charges followed a multi-year investigation into the systemic abuse of prisoners in Los Angeles County jails.