Four members of a Northern California militia were indicted Friday for allegedly obstructing justice and destroying records related to the May shooting death of a federal officer in Oakland by another member of their extremist group. The federal indictment unsealed Friday revealed that the shooting suspect, Steven Carrillo, told fellow members of the militia via a secured message app that he killed the federal officer, and he warned them that he was about to engage Santa Cruz sheriffâs deputies in a gun battle during which he would kill another law enforcement officer. His compatriots immediately began covering up their association, authorities allege.