Officers testify before grand jury.
Officers on Thursday were questioned about their knowledge of an April 1996 arrest by Officers Brian Liddy and Paul Harper, who sources say will soon be charged with perjury and falsifying police reports. Like many of those previously overturned, six of the seven involved alleged drug plants. To date, at least 30 Los Angeles police officers, including three sergeants, have been relieved of duty, have quit or have been fired in connection with the ongoing probe.