Follow up to this post: A Rat’s Life: MS-13 Informants Run Wild. In a rare turnaround, the government has prosecuted its own informant for lying to prosecutors about murders he previously committed. Roberto Acosta now faces up to five years; he argues that he was the government’s main source for its case against MS-13 and without him they wouldn’t have been able to get the numerous convictions they did. SF Weekly blog postings here: Feds Want Maximum Prison Time for Roberto Acosta, MS-13 Informant Who Lied and Roberto Acosta, MS-13 Informant Convicted of Lying, Wants Out of Jail