A CHP lieutenant allegedly aggressively promoted his daughter's business to companies seeking California Highway Patrol contracts he oversaw, signed a state purchase order for a deal involving her firm and listed himself as her venture's sole contact in state tax records, according to allegations in warrants used to search the officer's home and bank.
The CHP started scrutinizing Lt. Gregory Williams after issues relating to his purported role in awarding $600,000 in CHP license plate scanning system deals. Investigators subsequently discovered, the search warrant alleges, that key e-mails were deleted from Williams' police computer and that videos he made of scanning system field tests had gone missing.
CHP Sgt. Angela Ditzenberger outlined details of those allegations in sworn statements used to obtain four search warrants in January.

Censored versions of those warrants were unsealed Thursday after a four-month legal battle to make them public. The California Supreme Court rejected a last-minute bid by Williams' lawyers to keep them sealed.
Williams, Ditzenberger alleged, "negotiated, influenced, recommended and/or co-signed contracts on behalf of the CHP that directly and/or indirectly involved a company called Miner Fabrication, owned by his daughter Krystal and son-in-law, Chad Miner."
Since the January searches, the CHP has recommended to the Sacramento County District Attorney's Office that Williams be charged with a felony conflict of interest. The district attorney is still reviewing that recommendation, said spokeswoman Lana Wyant.
Williams has made no public comment since being put on administrative leave last November, though his daughter has said that neither she nor her father did anything wrong. Christopher Wing, a Sacramento attorney who represents Williams, declined to comment Thursday, saying he had not received nor read the warrants.
A CHP person would not say whether the deleted e-mail or missing videos were recovered.
CHP officers use license plate scanning systems to identify stolen vehicles automatically, without having to manually enter each plate.
One of the search warrants states that a month before officers raided his house, Williams had his CHP union attorney give an assistant chief a package of original scanning system documents he had kept at his home.
At the time, Williams had "primary oversight" for the scanning program, Ditzenberger alleged in her search-warrant application. She cited documents, witness statements and e-mails suggesting that Williams favored one Tennessee vendor, PIPS Technology Inc., over rivals and that he had been in close contact with PIPS since 2004.
During that time, PIPS hired Miner Fabrication to supply metal brackets that attach the scan systems to patrol car light bars. PIPS also used Miner as a small-business agent that resold its systems to the CHP. State officials interviewed by the CHP said they were unaware of the Williams family link to Miner Fabrication and that Williams did not disclose it, according to the search warrants.
Records for Williams' state- issue Nextel cellular telephone account also show he contacted Miner Fabrication multiple times in one week in May 2005 during bidding for a CHP license plate scanning system contract.
A witness whose name was redacted from the documents told the CHP that Williams "knew the contents of all the bids received by fax because (the witness) discussed them with him throughout the process." Miner Fabrication got the $101,000 contract a month later.
The unsealed documents also allege:
• Williams recommended to state officials strategies designed to steer contracts to Miner Fabrication and avoid Department of General Services bid procedures.
• Though a rival company called Home Electronics submitted a slightly lower bid, Miner Fabrication was awarded another $12,331 CHP contract for police antennas in November 2006 before officials canceled it as the conflict-of-interest probe continued.
• Williams attended seminars in California and Nevada and "promoted PIPS Technology systems" while on CHP assignment.
• Several witnesses, whose names and jobs were redacted from the documents, told CHP officers "they heard statements by Lt. Williams that they believed showed favoritism to PIPS Technology" during the CHP field testing of the systems.
• Williams told CHP officials that he might have a conflict of interest. He was put on leave that same day.
• An electronic folder of Williams' e-mail exchanges with PIPS Technology was cleared from CHP computers. The CHP did not shut down his mail until Dec. 1, four days after he was put on leave.
When a CHP investigator contacted PIPS Technology, an executive with the company agreed to turn over all documents describing its financial links to Miner Fabrication.