Officials for the union representing Los Angeles police officers said Monday they are considering their legal options after a federal judge upheld a key provision of the federal consent decree that requires financial disclosures by gang and narcotics officers.

The 35-page order by U.S. District Court Judge Gary Feess turned away a challenge by union officials who went to court to block a provision requiring officers joining anti-gang and narcotics units that frequently seize cash or other contraband to disclose personal financial information every two years.

The roughly 600 officers already assigned to the units were granted a two-year grace period in February 2009 before having to complete the records, although that could be delayed because of legal challenges.

In an e-mail sent to members, Los Angeles Police Protective League President Paul M. Weber called the disclosure provisions "unnecessary and dangerous invasion into the personal finances of our members and their families" and held out the possibility of further legal challenges to the provisions.

He also noted that the city had proved "incapable of maintaining confidential personnel records."

He cited two incidents in which hundreds of boxes of case materials were found in the corridors of the Northeast Division station and in a parking structure at a southwest-area station.

Officials said the boxes contained detailed criminal case materials, such as search warrants, detective logs, and victim and witness information. They included Social Security numbers and addresses and officers' personal information pertaining to overtime.

In another incident in 2009, the Los Angeles Police Commission released a confidential report on the Internet that contained the names of hundreds of officers accused of racial profiling and other misconduct.