Prosecutors were unable to substantiate claims that the Contra Costa County GOP chairman received death threats, the Contra Costa Times reported. Nagaraja Rao had complained of receiving several phoned threats shortly after the party's central committee voted to oppose the recall of two Pinole city council members, Maria Alegria and Stephen Tilton. Rao told the city council last year that one caller had told him, "I'm watching you. You will be dead." Because Rao reported receiving some of the threats while he was in Berkeley, officials in Alameda County looked into his allegations. Assistant District Attorney Marty Brown told the Times that there is insufficient evidence to charge anyone.